archaic homo sapiens: group of answer choices b.shows a mixture of homo erectus and homo sapiens traits. a.occurs only in europe and asia. c.is dated to the late pliocene. d.is often found with oldowan stone tools.
Answers
Archaic homo sapiens is d.is often found with oldowan stone tools.
Archaic Homo Sapiens refers to the earlier form of anatomically modern humans that lived around 300,000 to 30,000 years ago, this group had larger brains than their predecessors and also exhibited other Homo erectus traits. They are generally believed to be the common ancestor of Homo sapiens and Neanderthals. They often lived in caves or other sheltered areas and hunted for food using tools such as Oldowan stone tools. These tools were used for cutting, scraping, and other tasks that were necessary for survival.
Archaic Homo Sapiens is generally believed to have originated in Africa and then spread throughout the world. However, there were also populations of archaic Homo Sapiens in Europe and Asia. In conclusion, Archaic Homo Sapiens is a group of anatomically modern humans that exhibit Homo erectus traits and lived around 300,000 to 30,000 years ago. They are often found with Oldowan stone tools and are believed to be the common ancestor of Homo sapiens and Neanderthals.
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Related Questions
What would you expect to happen to a plant experiencing a lack of water in its chloroplasts?
a. Less oxygen would be released to the environment with fewer H2O molecules present
b. Less ATP and NADH would be produced without the electrons from H2O
c. Less energy would be available in the light independent phase to build carbohydrate molecules
d. All of the above
Answers
Answer:
Its A Less oxygen would be released to the environment with fewer H2O molecules present
Explanation:
Which statement is the best description of an ecosystem?
Answers
Answer:
biological community of interacting organisms and their physical environment
there are six different codons that all specify the amino acid leucine. what is the term that refers to this phenomenon?
Answers
Answer: Degeneracy of Codons
Explanation:
It means that there is more than one codon that specifies the single amino acid. The phenomenon in which several of the amino acids, each coded by more than one codon is called codon degeneracy.
A hypertonic solution has:
Fewer water molecules outside the cell than are inside the cell
More water molecules outside the cell than are inside the cell
The same number of water molecules inside and outside of the cell
No water inside or outside of the cell
Answers
A hypertonic solution has:
Fewer water molecules outside the cell than are inside the cell. Thus, option "A" is correct.
What is hypertonic solution?The cell is in a hypertonic solution because it lost water through osmosis and shrunk.A hypertonic solution contains more solute molecules compared to solvent molecules while the hypotonic solution has more solvent molecules than solute molecules.When a plant cell is placed in a hypertonic solution it loses water through osmosis and shrinks.An animal cell placed in a hypotonic solution absorbs water through osmosis, increases in size and then bursts. Plant cell, on the other hand, does not burst when placed in a hypotonic solution as it contains a cellulose cell wall.Thus, option "A" is correct.
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True or false plant cells use cellular respiration to get chemical energy from food. IXL LAST QUESTION HELP NOW
Answers
Answer: In mitochondria, through the process of cellular respiration breaks down sugar into energy that plant cells can use to live.
Explanation: true
What has the greatest influence on windspeed
Answers
The primary factor affecting wind speed is the pressure gradient between high and low pressure locations.
What affects the wind's velocity?
The difference in pressure between high- and low-pressure zones is known as a pressure gradient.
The pressure gradient and wind speed are intimately correlated, so as the pressure gradient (i.e., change in pressure) grows, the wind speed at that place also increases.
What influences wind speed the most?
Because the sun heats the Earth differently in different regions, creating pressure differences, wind is a result of a horizontal variation in air pressure, therefore the sun is the primary source of most winds.
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The simulation shows a game of tug-of-war. Place a blue team and a red team with same-sized people on each side of the rope. What can you say about the sizes of the left and right arrows?
Answers
The sizes of the left and right arrows should be the same.
In the game of tug-of-war, the sizes of the left and right arrows represent the relative strengths of the blue team and the red team. If the blue team is stronger and pulling harder, the size of the left arrow would be larger than the size of the right arrow.
Conversely, if the red team is stronger, the size of the right arrow would be larger than the size of the left arrow. The sizes of the arrows indicate the force exerted by each team and provide a visual representation of the balance of power in the game.
In tug-of-war, the objective is for one team to overpower the other and pull the rope towards their side. The larger the arrow representing a team's strength, the greater their force and ability to move the rope in their direction.
The size of the arrows serves as a visual cue for spectators to understand which team has the advantage at any given moment. It helps to create a sense of competition and excitement as the teams struggle to gain control of the rope.
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how to get 85●/● in board?
without hardwork.
Answers
That's an exception...
Without hardwork you cannot get full marks..
the presence of a definite upper and lower surfaces in animals
Answers
Answer:
The phylum brachiopoda
Explanation:
In ______ reproduction, genetically identical offspring are produced, while in ______ reproduction, offspring are genetically different from each other. Multiple choice question. asexual; sexual
Answers
HELLO EVERYONE
Which statement is correct?
A. The number of electrons of a neutral atom always equals the number of protons.
B. Atomic weight is identical to atomic mass.
C. The number of neutrons always equals the number of protons.
D. The number of neutrons always equals the number of electrons.
Answers
Answer:
A. The number of electrons of a neutral atom always equals the number of protons.
Explanation:
For Example
Sodium (Na)
Atomic Number = 11
number of protons and electrons = 11
If you are given a course of 10 days' worth of antibiotics, how many days should you take them for?
Answers
Pulling weeds and trapping gophers are an example of what kind of control?
A. Natural
B. Mechanical
C. Physical
D. Cultural
Answers
Mechanical control involves using physical means such as pulling, cutting, trapping, or otherwise physically removing pests from the environment. The answer is B.
Weeding involves physically removing unwanted plants from an area, while trapping gophers involves physically capturing and removing them from the area. This method of control is often effective for small-scale infestations but can be labor-intensive and costly for larger areas.
Natural control involves introducing natural predators or parasites to the area, while physical control involves altering the physical environment to deter pests. Cultural control involves using agricultural practices such as crop rotation or timing of planting to prevent pest infestations.
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What are the fundamental methods, models, or theories in
nanotribology? Please be as explicative as you can.
Answers
The fundamental methods, models, and theories in nanotribology include Atomic Force Microscopy (AFM), Molecular Dynamics (MD) simulations, Contact Mechanics, Surface Chemistry, and Lubrication Theory.
Nanotribology, also known as nanoscale tribology, is the study of friction, wear, and lubrication at the nanoscale level. It focuses on understanding the fundamental mechanisms and behaviors of surfaces and interfaces when subjected to relative motion on the nanometer scale.
There are several fundamental methods, models, and theories employed in nanotribology research:
Atomic Force Microscopy (AFM): AFM is a widely used technique that allows for the measurement and manipulation of surfaces at the atomic and molecular scale. It provides detailed information about surface topography, friction, and adhesion forces.
Molecular Dynamics (MD) Simulations: MD simulations use numerical methods to simulate the motion and interactions of atoms and molecules. These simulations provide insights into the behavior of surfaces, lubricants, and additives at the nanoscale, allowing for the prediction of friction and wear properties.
Contact Mechanics: Contact mechanics is the study of the deformation and interaction between contacting surfaces. It involves the analysis of forces, stresses, and deformation at the interface, which helps in understanding the origins of friction and wear.
Surface Chemistry: Surface chemistry plays a crucial role in nanotribology. It involves studying the chemical composition, structure, and reactivity of surfaces, as well as the formation of boundary layers and tribofilms during sliding.
Lubrication Theory: Lubrication theory focuses on understanding how lubricants reduce friction and wear between surfaces. It includes concepts such as boundary lubrication, hydrodynamic lubrication, and elasto hydrodynamic lubrication, which describe different mechanisms of lubrication at the nanoscale.
These methods, models, and theories collectively contribute to advancing our understanding of nanotribology and have applications in various fields, including materials science, nanotechnology, and engineering.
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How does a negative feedback
loop maintain homeostasis?
A. it creates an external response
B. it works to bring the body back to the target of
stability
C. it moves the characteristic above normal
limits
D. it creates an increase in product of a reaction
Answers
Negative feedback helps to keep a variable within its regular range and lessens an overreaction.
How does unfavourable criticism work and what is it?
Negative feedback occurs when an output of a system, process, or mechanism is given back in a way that aims to reduce oscillations in the output, whether these oscillations are caused by changes in the input or other disturbances.
What possible repercussions could negative feedback have?
Because the feedback energy (voltage or current) is out of phase with the input signal when there is negative feedback, the input signal opposes the feedback energy. Negative feedback reduces the amplifier's gain. It also reduces distortion, noise, and instability. The bandwidth is increased while the input and output impedances are improved by this feedback.
Become familiar with Bandwidth.
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Answer: B
Explanation:
What Is the Answer Yall Please help I need this very bad:C Marking brainliest
Answers
I hope this helps :)
This very important component of the heart's conduction system is located in the posterior wall of the right atrium, near the entrance of the superior vena cava:
Answers
The sinoatrial node is very important component of the heart's conduction system that situated close to the site of superior vena cava connection on the posterior wall of the right atrium (SA node). The SA node, which is made up of autorhythmic cells, acts as the heart's "pacemaker" by producing the action potentials that cause contraction to begin.
What is sinoatrial node or important component of the heart's conduction system?The SA node, which is made up of autorhythmic cells, acts as the heart's "pacemaker" by producing the action potentials that cause contraction to begin. Bachman's bundle, a unique band of swiftly conducting tissue that quickly transmits the action potential to the left atrium, is hypothesised to help the two atria contract concurrently.
The atrioventricular node (AV node), which is situated in the right atrium's floor close to the interatrial septum, senses the action potential. The internodal pathways are once again specialised conduction routes that swiftly transfer the action potentials from the SA node to the AV node. The action potential is then "delayed" by the AV node for around 0.15 seconds, enabling the atria to contract before the ventricles.
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what is alcohol and it's meaning
Answers
Answer:
Alcohol consumption is the drinking of beverages containing ethyl alcohol. Alcoholic beverages are consumed largely for their physiological and psychological effects, but they are often consumed within specific social contexts and may even be a part of religious practices
Answer:
Alcohol is a psychoactive substance that is found in alcoholic beverages. It is also used in some medicines and household products. Alcohol is made when yeast ferments sugars, such as those found in grains, fruits, and vegetables. The fermentation process produces ethanol, which is the type of alcohol that is found in alcoholic beverages.
Alcohol is a depressant drug, which means that it slows down the central nervous system. This can lead to a number of effects, including:
* Impaired judgment
* Drowsiness
* Slurred speech
* Loss of coordination
* Nausea and vomiting
* Blacking out
* Unconsciousness
In large quantities, alcohol can be fatal. It can also lead to a number of health problems, including:
* Liver damage
* Heart disease
* Cancer
* Brain damage
* Mental health problems
* Alcohol dependence
Alcohol use is a major public health problem. It is estimated that alcohol is a factor in over 88,000 deaths in the United States each year. Alcohol use is also a leading cause of traffic accidents, injuries, and violence.
If you are concerned about your alcohol use, please talk to your doctor. There are many resources available to help you reduce or quit your alcohol use.
Explanation:
How are soluble food molecules absorbed into the epithelial cells of the small intestine
Answers
Soluble food molecules are absorbed into the epithelial cells of the small intestine through the process of diffusion and active transport.
There are n bacteria and one virus in a Petri dish. Within the first minute, the virus kills one bacterium and produces another copy of itself, and all of the remaining bacteria reproduce, making 2 viruses and 2(n−1) bacteria. In the second minute, each of the viruses kills a bacterium and produces a new copy of itself, resulting in 4 viruses and 2(2(n−1)−2))=4n−8 bacteria. Again, the remaining bacteria reproduce. This process continues every minute. Will the viruses eventually kill all the bacteria? If so, give an algorithm that computes how many steps it will take. How does the running time of your algorithm depend on n ?
Answers
The viruses will eventually kill all the bacteria. The running time of the algorithm is approximately O(log n).
Yes, the viruses will eventually kill all the bacteria. The number of bacteria decreases with each step, while the number of viruses doubles. The algorithm for determining the number of steps increments the step until the number of remaining bacteria becomes zero.
The running time of the algorithm is approximately logarithmic in nature, as the number of steps required to eliminate all bacteria grows logarithmically with the initial number of bacteria, n. This means that as the number of bacteria increases, the running time of the algorithm increases at a slower rate, making it an efficient approach for large values of n.
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how to deter chipmunks from digging in flower pots
Answers
Remember, different methods may work better in different situations, so it may be helpful to combine a few approaches to increase effectiveness. Keep in mind that persistence is key, as chipmunks may adapt to certain deterrents over time.
To deter chipmunks from digging in flower pots, you can try the following steps:
1. Remove food sources: Chipmunks are attracted to food, so make sure there are no spilled seeds, fruits, or bird feed in or around your flower pots. Clean up any fallen debris regularly.
2. Use deterrents: There are various types of deterrents you can try to keep chipmunks away. For example, you can sprinkle cayenne pepper or garlic powder around the pots, as the strong scent can deter them. You can also try using predator urine or essential oils like peppermint or citronella.
3. Create barriers: Physical barriers can be effective in preventing chipmunks from accessing your flower pots. Place wire mesh or hardware cloth over the top of the pots, ensuring there are no gaps for the chipmunks to squeeze through. You can also bury a wire mesh or cloth around the pots to prevent them from digging from below.
4. Repellent plants: Planting certain types of plants can naturally repel chipmunks. For example, daffodils, marigolds, and alliums have strong scents that chipmunks dislike. Consider adding these plants to your flower pots as an extra deterrent.
5. Make noise: Chipmunks are startled by loud noises, so placing wind chimes or aluminum foil strips near the flower pots can startle them away. You can also try using ultrasonic devices specifically designed to deter rodents.
6. Keep surroundings tidy: Maintain a clean and clutter-free environment around your flower pots. Remove any potential hiding spots, such as piles of wood or debris, which chipmunks may use as shelter.
Remember, different methods may work better in different situations, so it may be helpful to combine a few approaches to increase effectiveness. Keep in mind that persistence is key, as chipmunks may adapt to certain deterrents over time.
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Which part of your integumentary system is found on the outside of your body? *
a. Epidermis
b. Keratin
c. Dermis
d. Melanin
Answers
Answer:
The correct answer is a. Epidermis.
Explanation:
The skin is made up of two layers that have different structure and origin: epidermis and dermis, which are closely related. The epidermis is the most superficial part of the skin and is made up of a keratinized flat stratified epithelial tissue, where several layers or strata can be seen that, depending on their greater or lesser development, allow the skin to be classified into thick and thin. The thick skin is on the palms of the hands and the soles of the feet and is characterized by a thick layer of keratin and by having a so-called lucid layer that does not exist in thin skin. Thin skin also has keratin, but the thickness of the keratin layer is much less. The epidermis is separated from the dermis by a limiting membrane, the basement membrane, which measures 50-70mm thick and is attached to the dermis by reticular fibrils that show axial periodicity.
How does the speed of coastal erosion compare to other types of erosion?
Answers
Erosion is the action of surface processes that removes soil, rock, or dissolved material from one location on the Earth's crust and then transports it to another location where it is deposited. Erosion is distinct from weathering which involves no movement. Removal of rock or soil as clastic sediment is referred to as physical or mechanical erosion; this contrasts with chemical erosion, where soil or rock material is removed from an area by dissolution.
What contributes to water's unique properties as a universal solvent, temperature moderator, and cohesive behavior? Hydrogen is a special element that does not have neutrons. The oxygen atoms of water molecules attract electrons more than hydrogen atoms. The properties are related to the crystalline structure of liquid water. The properties are related to the high electronegativity of hydrogen atoms. i think is B
Answers
Answer:
The oxygen atoms of water molecules attract electrons more than hydrogen atoms.
Explanation:
The uniqueness of water as a chemical substance is attriuted to its unique properties. These properties include being a universal solvent, having a high specific heat (temperature moderator), cohesive and adhesive nature etc.
This wonderful properties of water is due to its POLAR nature, which is when a substance has both positively and negatively charged parts to it. This is possible because the oxygen atoms (O) of water molecules attract electrons more than hydrogen atoms (H).
This POLARITY of water molecule is responsible for the HYDROGEN BONDING between water molecules and hence, contributes to the properties of water mentioned in the question (universal solvent, temperature moderator, and cohesive behavior)
Which of the following best explains why the frog feels drained due to a lack of food?
A. His belly is empty and about to croak
B. His circulatory system is not functioning properly.
C. His digestive system cannot produce energy.
D. His cells cannot perform cellular respiration to make energy without food.
HURRY
Answers
Answer:
d
Explanation
lack of food = no energy = fatigue
What is the current planetary positions?
Answers
The current planetary positions can be determined by astronomers and scientists who use telescopes and other instruments to observe the planets and track their movements.
In addition, software programs and online tools can be used to generate simulations of the current planetary positions and predict their movements in the future.
It is important to note that the planetary positions are not fixed and are constantly changing due to the gravitational influences of the Sun and other planets. This means that the current planetary positions will be different from those observed in the past, and they will also be different from those observed in the future.
The positions of the planets in our solar system are constantly changing due to their movements around the Sun. At any given moment, the planets are located at specific points in their orbits, and their positions can be determined using astronomical observations and mathematical calculations.
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One of the largest and oldest organisms on earth is located in fish lake and nation, forest, in utah.pando is an 80,000 year old grove of aspen trees that cover 100 acres. Although it looks like a forest, DNA analysis of several of the trees has confirmed it is really just one huge organism. Therefore the trees must have been reproduced
Answers
Pando aspen grove in Utah is an immense, genetically identical organism consisting of interconnected aspen trees spanning 100 acres and estimated to be around 80,000 years old.
One of the largest and oldest organisms on Earth, known as Pando, is located in Fish Lake National Forest in Utah. Pando aspen grove is an 80,000-year-old grove of aspen trees that covers approximately 100 acres. While it appears to be a forest, DNA analysis of several of the trees has revealed that they are genetically identical, confirming that Pando is actually one immense organism. The trees of Pando have been reproduced through a process called vegetative reproduction, where new shoots and stems emerge from the existing root system. This unique reproductive strategy has allowed Pando to persist and expand over thousands of years, making it a remarkable example of the interconnectedness and longevity of living organisms.For more questions on Pando aspen grove:
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A model of a gene, DNA, and a chromosome is shown here. A researcher tags the gene with a heavy radioactive isotope (P-32). Which statement predicts the outcome of the radiolabeling on the gene, DNA, and chromosome while differentiating between the three components of the model?
Answers
Answer:
The gene will be radiolabeled, but only a portion of the chromosome will display P-32 because genes are smaller than chromosomes
Explanation:
Genes are made of DNA, but there are many (numerous) genes found along chromosomes. Only a small portion of the chromosome will be radiolabeled.
The gene will be radiolabeled, but only a portion of the chromosome will display P-32 because genes are smaller than chromosomes.
What is the relationship among DNA a gene and a chromosome?
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.
Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
Thus, The gene will be radiolabeled, but only a portion of the chromosome will display P-32 because genes are smaller than chromosomes.
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which celestial object is the smallest
Answers
In 2009, the Hubble Space Telescope discovered the smallest object ever seen in visible light at the time within the Kuiper Belt. The Kuiper Belt Object (KBO) found was a mere 3,200 feet (975 meters) across and was 4.2 billion miles away.
Match the word to the correct definition.
Answers
Autotroph- b, heterotrophs- f, producers- A, consumer- k, foodweb- g, biomagnification I, decomposer- h, biomass- D, tropic level- j, energy- pyramid - e, food chain- c.
What are the terms used in ecosystems?
An autotroph organism makes its own food, heterotrophs obtain energy to eat another organism, and producers produce energy for other organisms and also for themselves.
Consumer organism which consumes any other organism, foodweb levels of organism shares relation with each other and to the primary source of energy.
Biomagnification is a concentration of a substance, a decomposer breaks down dead organic matter.
Biomass amount of organisms in a given area or volume, a tropic level diagram showing the interrelationship.
Therefore, an energy pyramid is a flow chart that shows the amount of energy transferred to different tropic levels, food chain shows the eating behavior.
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