The Carboniferous is known as "The Age of Swamps".
The Carboniferous is known as "The Age of Swamps".
True
False
Answers
It is true that the Carboniferous is known as "The Age of Swamps" and coals.
What is Carboniferous era?The Carboniferous Period is well-known for its vast swamp forests.
These swamps produced the coal that gave rise to the term Carboniferous, or "carbon-bearing." During the late Paleozoic Era, the Carboniferous Period lasted from 359.2 to 299 million years ago*.
The Carboniferous period is often referred to as "the age of swamps and coal." Swamps and seas covered much of the land during this time period.
Thus, the given statement is true.
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Related Questions
Two events accrued the same period. Which of these must be true?
A. They occurred the same era but could have been in different eons
B. They occurred during the same period but could have been in different eras
C. They occurred during the same era but could have been in different epochs
D. They occurred during the same epochs but could have been in different eras
Answers
The graph shows the oxygen consumed by an athlete during different
stages of training.
Volume of Oxygen Consumed During Exercise
Volume of O, (mL/min)
2,500
2,000
1,500
1,000
500
0
12
Rest
8 9 10 11 12 13 14 15
Recovery
Exercise
Tine
(min)
Based on the graph, which process is occurring between minute 5
and minute 10?
F Nuclel are building amino acids for energy storage.
G Ribosomes are building carbohydrates to increase energy output.
H Chloroplasts are using energy to produce oxygen.
J Mitochondria are using oxygen to produce ATP.
Answers
Based on the graph, the process that is occurring between minutes 5
and minute 10 is Mitochondria are using oxygen to produce ATP.
The correct option is J.
What is aerobic respiration?Aerobic respiration is a metabolic process that occurs in the presence of oxygen, in which cells convert nutrients into energy.
The process begins with the breakdown of glucose into pyruvate in a process called glycolysis.The pyruvate then enters the mitochondria, where it is broken down further through the citric acid cycle and oxidative phosphorylation to produce ATP (adenosine triphosphate), the primary energy currency of cells. Aerobic respiration is highly efficient and allows cells to produce a large amount of ATP, making it the preferred pathway for energy production in most eukaryotic organisms.
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By undergoing meiosis, each primary spermatocyte ultimately gives rise to how many sperm cells?
Answers
Your answer is 4!
Why is one strand of the DNA upside down?
Answers
Answer:
One strand of DNA is upside down due to the nitrogen bases or organic bases joining the sugar molecule at carbon 1.
Explanation:
What is the function of the cell wall?
A. to contain the genetic information of an organism
B. to package proteins in an animal cell
C. to transport materials throughout a cell
D. to provide structural support for a plant cell
Answers
Answer:
D
Explanation:
the answer is d the cell wall provides support and protection
What type of organism carries out photosynthesis?
A) autotroph
B) heterotroph
C) prokaryotes
D) eukaryotes
Answers
Answer: A) autotroph
Explanation:
Answer:
autotroph
Explanation:
WHAT IF? If further evidence indicates that the root of the eukaryotic tree is as shown in Figure 28.24 , would this evidence support, contradict, or have no bearing on the hypothesis that Excavata is monophyletic?
Answers
If further evidence indicates that the root of the eukaryotic tree, it would have no bearing on the hypothesis that Excavata is monophyletic.
The term "monophyletic" refers to a group that includes an ancestral species and all of its descendants. If the root of the eukaryotic tree is different than what is shown in Figure 28.24, it would not directly impact the monophyly of Excavata.
Excavata is a specific group within the eukaryotic tree that includes certain organisms with unique features. The position of the root of the tree may affect the overall structure and relationships within the tree, but it would not necessarily change the monophyly of Excavata. In conclusion, the evidence supporting a different root position would not contradict or support the monophyly of Excavata.
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The movement of water out of a cell ,puts the cell into
1.isotonic state
2.hypotonic state
3. Hypertonic state
Answers
Answer:
I think
Explanation:
2 . Hypotonic state
please HELP me i cant fail this class What are the two forces of gravity that contribute to tectonic plate movement at mid-ocean ridges?
Ridge subduction and slab flight
Ridge slip and slab slide
Ridge push and slab pull
Gravity does not pull them
Answers
Answer:
"Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones."
Explanation:
Does this help?
It is because of ridge slip and slab slide i the divergent plate boundaries, where tectonic plates movement creates mid ocean ridges.
What is divergent boundary?Divergent plate boundaries are the regions where the tectonic plates are diverging from one another, this is known as a divergent plate boundary. Above upward convection currents, this happens.
The lithosphere's base is pushed upward by the rising current, which lifts it off the ground and flows lateral currents beneath it. When an oceanic lithosphere border diverges, the rising convection current beneath raises the lithosphere, creating a mid-ocean ridge.
The plate material above is dragged along in the flow direction by this lateral flow. The overlaying plate is thinned out, fractures, and pulls apart at the peak of the uplift.
Hence, in fact it is not by the gravitational pull but by the ridge slip.
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what level of ecology is concerned with groups of individuals of different species? group of answer choices
Answers
The level of ecology that is concerned with groups of individuals of different species is called community ecology. It is a subfield of ecology that focuses on the study of interactions between species within an ecosystem. Community ecology studies the structure, composition, and dynamics of biological communities and how they respond to changes in the environment.
Community ecology deals with the interactions among different species in a community and how they influence each other. It focuses on the factors that affect the diversity, abundance, and distribution of species in a community. The interactions among species include predation, competition, mutualism, parasitism, and commensalism.
Community ecology also examines the role of physical and chemical factors such as temperature, water availability, soil type, and nutrients in shaping the community structure.
Community ecology is concerned with both abiotic and biotic factors that affect the interactions among species. Abiotic factors refer to non-living components of the environment such as temperature, water availability, and soil type.
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in which phase of periodontal disease progression do the pmns first travel through the bloodstream, exit the bloodstream, and travel through the gingival connective tissue to the gingival sulcus? group of answer choices a) initial lesion b) established lesion c) early lesion d) advanced lesion
Answers
In early lesion phase of periodontal disease progression do the pmns first travel through the bloodstream, exit the bloodstream, and travel through the gingival connective tissue to the gingival sulcus. The correct option to this question is C.
Gum disease progresses through three stages. Depending on the degree of the infection, they can range from moderate to severe. Gingivitis, periodontitis, and advanced periodontitis are the names for these three stages.
The mildest type of the infection, gingivitis is regarded as the early stage of gum disease.
Periodontitis is the second stage of gum disease. When gingivitis is not treated in a timely manner, it advances to this stage.
The most advanced and third stage of gum disease is called advanced periodontitis. It also results in dental decay and tooth loss, making it the most severe.
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Which statements describe the cell membrane? Check all that apply. The cell membrane is very selective. The cell membrane lets anything enter the cell. The cell membrane lets anything leave the cell. The cell membrane is a protective layer surrounding a cell. The cell membrane allows waste to leave the cell.
Answers
Answer:
the cell membrane is very selective.
The cell membrane is a protective layer surrounding a cell.
The cell membrane allows waste to leave the cell.
Explanation: the cell membrane is a semipermeable barrier that separates the cell from its surrounding environment. Thus, the cell membrane helps the cell to maintain steady constant cellular conditions.
The platypus is an egg-laying mammal from Australia. The male platypus has venomous stingers on his back feet that he uses to stab and poison enemies. The poisonous chemicals in platypus venom are also found in other animals. Some snakes, lizards, starfish, and sea anemones have very similar chemicals in their venom. How did all these animals end up using similar poisons?
Answers
Answer:
evolution probably
Explanation:
maybe they share the same ancestor
According to this platypus is an egg-laying mammal from Australia. The male platypus has venomous stingers on his back feet that he uses to stab and poison enemies.
The poisonous chemicals in platypus venom are also found in other animals is due to Evolution.
What is Evolution?
Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection.
Thus, evolution is probably the reason these animals end up using similar poisons.
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is spirogyra a protist or thallophyta
Answers
Answer:
Protista
Explanation:
Kingdom: Protista and Division: Charophyta
Answer:
protista
Explanation:
it exists in haploid cells reproduced by binary fission
What structure is found in prokaryotic cells but not eukaryotic cells?
a. a single, circular DNA chromosome found in the cytoplasm
b. a chromosome that contains many histones
c. a chromosome found within a membrane-bound nucleus
d. a shorter, condensed chromosome in the nucleus
Answers
What structure is found in prokaryotic cells but not eukaryotic cells?
a. a single, circular DNA chromosome found in the cytoplasm
because :
Prokaryotic cells may also contain extrachromosomal DNA, or DNA that is not part of the chromosome. This extrachromosomal DNA is found in plasmids, which are small, circular, double-stranded DNA molecules.
The structure is found in prokaryotic cells but not eukaryotic cells is - option. a. a single, circular DNA chromosome found in the cytoplasm
Cells are mainly two types that are prokaryotic and eukaryotic cells.
Prokaryotic cells-cells that lack double-membrane organelles or structures and have no nucleus and genetic material present in the cytoplasm.The circular chromosome is present in the cytoplasm in an area called the nucleoid in prokaryotes.2. Eukaryotic cells:
with a true nucleus, double-membrane organelles or structures, genetic material is stored in the nucleus.The chromosome is made up of DNA coiled and condensed around nuclear proteins called histones in the nucleoplasm.Thus, the correct answer is - a. a single, circular DNA chromosome found in the cytoplasm
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in the space labeled d, draw the product(s) of meiosis ii, assuming that cytokinesis has occurred.
Answers
Meiosis is the type of cell division that results in the formation of haploid gametes. It occurs in two phases. The first phase is called meiosis I and the second phase is called meiosis II. Here, we'll talk about meiosis II and the products of meiosis II.
Assuming that cytokinesis has occurred, the products of meiosis II can be drawn as follows:In the diagram above, it is assumed that the cell that undergoes meiosis is diploid (2n) and has four chromatids. It is also assumed that crossing over has occurred during meiosis I. After meiosis I, two cells are produced, each containing half the number of chromosomes as the original cell.
In meiosis II, each cell divides into two daughter cells. The chromatids in each daughter cell are no longer identical because crossing over has occurred, and each chromatid has a combination of maternal and paternal genetic material. The end result of meiosis II is four haploid daughter cells, each with one chromatid from each homologous chromosome.
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study of cres of some genes from different species demonstrate that there can be substantial variation in these elements with little change in overall gene expression patterns. this is a good example of . quantitative traits epistasis cryptic genetic variation competitive binding
Answers
The study of cre elements in different species has revealed that there can be significant variation in these elements without causing a significant change in overall gene expression patterns. This is a good example of cryptic genetic variation, which refers to genetic variation that is not readily apparent in an organism's phenotype.
In this case, the variation in cre elements may not affect the expression of the gene in question, but it could still have an impact on other traits or functions that are controlled by the same or related genes. This highlights the importance of considering genetic variation beyond just the genes themselves, and taking into account the regulatory elements that control their expression.
It also underscores the complexity of genetic interactions and the potential for epistasis, or the way in which different genes can interact with each other to produce a particular phenotype. Additionally, competitive binding may play a role in this context, as the variation in cre elements could impact the ability of regulatory proteins to bind to the DNA and control gene expression. Overall, this is a complex and nuanced issue that requires a long answer to fully unpack.
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After evaluating the evidence, you must prepare a report for the government explaining which species are the most and the least closely related, and at least five pieces of evidence for this. They also want to know which species developed first and which developed most recently, so list your species from most ancient to most recent.
Answers
In preparing a report for the government on which species are most and least closely related, it is important to consider multiple pieces of evidence. One of the most commonly used methods is analyzing DNA sequences, which can reveal the degree of genetic similarity between species.
Other methods include examining physical traits, behavior, and geographical distribution. Based on the available evidence, it appears that humans are most closely related to chimpanzees, followed by gorillas and orangutans. These primates all belong to the family Hominidae, which suggests a common ancestry. On the other hand, species such as birds and reptiles are less closely related to mammals. In terms of species development, it is difficult to determine an exact order, as the process of evolution is complex and ongoing. However, based on fossil records and genetic analysis, it is believed that ancient species such as bacteria and algae were among the first life forms on Earth. From there, more complex organisms such as fish, amphibians, and reptiles evolved over time. Mammals and primates, including humans, are considered some of the most recent developments in the history of life on Earth.
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In the troposphere, CFCs are stable. But in the stratosphere, CFCs are not stable and release damaging chlorine atoms when exposed to _____.
Answers
In the troposphere, CFCs are stable but in the stratosphere, CFCs are not stable and release damaging chlorine atoms when exposed to UV radiation.
Chlorofluorocarbons (CFCs) are compounds made up of carbon, chlorine, and fluorine atoms. They were once widely used in refrigerants, aerosol sprays, and foam insulation. However, because of their detrimental effects on the Earth's ozone layer, their use has been phased out.
In the stratosphere, CFCs are not stable and release damaging chlorine atoms when exposed to UV radiation. The chlorine atoms combine with ozone, resulting in a chain reaction that destroys the ozone layer, exposing the Earth's surface to harmful UV radiation.
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HELP!!!! answer quickly
Which of the following is an example of osmosis? *
Movement of free water molecules from an area of high concentration to an area of lower concentration
Movement of ions from an area of high concentration to an area of lower concentration
Movement of free water molecules from an area of low concentration to an area of higher concentration
Movement of ions from an area of low concentration to an area of higher concentration
Answers
Answer:
Movement of free water molecules from an area of low concentration to an area of higher concentration
Explanation:
Which is one of the ecosystems found in intertidal zones?
Answers
Answer:
estuaries trenches
Explanation:
In order to be considered part of the phylum Chordata, an animal must have a backbone. What other characteristics does this phylum share? Complete digestive system, lack of segmentation, and true body cavity No central brain, incomplete body cavity, and radial symmetry Exoskeleton, jointed feet, and simple nervous system Complete body cavity, segmentation, and bilateral symmetry
Answers
Answer:
Complete body cavity, segmentation, and bilateral symmetry
Explanation:
In conjuction with possessing a backbone, chordates also have a complete body cavity, segmentation, and bilateral symmetry. They possess a complete true body cavity called the coelom. They also exhibit heteromeric segmentation wherein the links between segmented regions are inconspicuous. And they majorly possess bilateral symmetry; being divisible into symmetric halves.
Answer:
Complete body cavity, segmentation, and bilateral symmetry
Explanation:
Took the test.
Many single-gene disorders such as sickle-cell disease predispose people toward a major cause of vascular dementia known as
Answers
The major cause of vascular dementia is known as narrowing and blockage of the small blood vessels inside the brain.
Sickle-cell disease is a single gene disorder where by the mutations in the beta-globin gene leads to formation of deformed haemoglobin molecules called haemoglobin S.
The signs and symptoms found in sickle-cell disease is the sickling of the red blood cells which leads to:
premature break down of red cells,anaemiayellowing of eyes and skin (signs of jaundice) Painful episodes can occur when sickled red blood cells, which are stiff and inflexible, get stuck in small blood vessels.Vascular dementia is a type of dementia that leads to loss of memory.
Vascular dementia occurs in individuals with sickle-cell disease due to narrowing and blockage of the small blood vessels inside the brain by the sickled cells.
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directions: identify whether it is biotic or abiotic by writing your answer before the number
1. algae
2. dissolve oxygen
3. amphibian
4. temperature
5. fish
6. changing weather
7. phytoplankton
8. trees
9. birds
10. rain
11. insects
12. fertile soil
Answers
2. Abiotic
3. Biotic
4. Abiotic
5. Biotic
6. Abiotic
7. Biotic
8. Biotic
9. Biotic
10. Abiotic
11. Biotic
12. [could be both]
In order to see if something is Biotic or Abiotic, think about whether it’s alive or not.
Dissolve oxygen is just the oxygen levels in the ocean, it’s not really a living thing. While it does effect the environment, it’s abiotic because it isn’t living. Fish, however, are are biotic because they’re alive.
If you’re ever confused, just think about the basic things all living things have, which is cells, and apply it to the question. Does changing weather have cells? Nope. do trees have cells? Yep!
Also, for the Fertile soil, I said it could be both because of what’s in the soil. Fertile soil has biotic factors in it, like dead animal stuff and dead plant stuff. (Anything that was once living, even if it’s dead, is still considered a biotic by the way). I think your best bet would be to put biotic, but I might be wrong
But yeah, in summary, Biotic means living, Abiotic means non living, and in order to see which is which, ask yourself if whatever you’re questioning has cells. Good luck
pls help will mak brainlist
Answers
The concentration difference is 30 mmHg and falls within the normal range of 37-65 mmHg.
How to calculate concentration difference?The table shows patient data for admission, normal range, and low, normal, and high values for oxygen (mmHg), as well as the normal and shallow gradients for concentration (mmHg), diffusion distance (microns), and surface area (mm2).
The concentration difference for oxygen is not given and needs to be calculated by subtracting the blood entering lungs concentration from the alveolar air concentration: 75 - 45 = 30 mmHg. This falls within the normal range of 37-65 mmHg.
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Image transcribed:
Upload your data from the Data Panel by pressing the upload button. Then interpret to continue.
Normal (Steep) Gradient
Shallow Gradient
Concentration (mmHg)
75 - 45 = _________
Alveolar Air - Blood Entering Lungs = Concentration Difference
Concentration Difference
Concentration Difference
Concentration Gradient
Diffusion Distance
Patient Data | Admission | Normal Range | Low | Normal | High
Oxygen (mmHg) |
Aveolar Air | 75 | 95-105
Blood Entering Lungs | 45 | 40-58
Concentration Difference | | 37-65
Diffusion Distance (Microns) | | 0.15-0.25
Surface Area (mm2) | | 0.14-0.16
Place the structures involved in cerebrospinal fluid (CSF) circulation in order from the initial production of CSF to when the CSF is absorbed into venous circulation.
- arachnoid villi - median and lateral apertures - choroid plexus - ventricles - dural sinuses - subarachnoid space
Answers
The structures involved in cerebrospinal fluid (CSF) circulation in order from the initial production of CSF to when the CSF is absorbed into venous circulation are choroid plexus - ventricles - arachnoid villi - subarachnoid space - median and lateral apertures - dural sinuses.
Cerebrospinal fluid (CSF) is a transparent, colorless liquid that surrounds the brain and spinal cord. Its function is to supply nutrients and remove metabolic waste products from the central nervous system (CNS).
The initial production of CSF occurs in the brain's ventricles, specifically in the choroid plexus. Then, the CSF flows through the ventricles before entering the subarachnoid space.
The absorption of CSF into venous circulation takes place via arachnoid villi, followed by its drainage into the dural sinuses, and finally returned to the circulatory system.
Hence, the proper sequence of structures involved in CSF circulation is as follows: choroid plexus - ventricles - subarachnoid space - arachnoid villi - dural sinuses - median and lateral apertures.
Overall, CSF plays a critical role in maintaining the proper functioning of the CNS.
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As chondroblasts mature and become embedded within the matrix, what do they become?.
Answers
Answer:
As chondroblasts secrete matrix, some cells become surrounded by matrix (no longer at boundary). Chondroblasts that become embedded within cartilage differentiate into chondrocytes.
Explanation: i believe this is the answer
Help Me Please!!! ASAP
Name the organelle that is found in plant cells where photosynthesis takes place.
Identify where the light dependent and light independent reactions occur in this organelle. (Make sure to label which one is each)
Answer using at least 2 complete sentences.
Answers
Answer:
Chloroplasts.
Light-dependent reactions occur in the thylakoid membranes. The light-independent reactions occur in the stroma of the chloroplasts.
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TRUE/FALSE. neuroglia do not conduct impulses; they protect the nervous system through phagocytosis by engulfing and digesting any unwanted substances.
Answers
It is true to say that neuroglia does not transmit electrical impulses; instead, they defend the nervous system through phagocytosis by engulfing and digesting any foreign objects.
Neuroglia is a abundant class of affecting animate nerve organ cells of ectodermal (astroglia, oligodendroglia, and peripheral glial cells) and mesodermal (microglia) inception. Neuroglial cells support homeostatic support, guardianship, and defense against the anxious fabric. The composition of the ancestry-intellect obstacle. Provision of nutrients for neurons.
Glial cells, otherwise known as glial cells or neuroglia, are cells that is non-neuronal and are situated inside the main central nervous system and the peripheral nervous system that supplies material and metabolic support to neurons, containing neuronal cushioning and ideas, and nutrient and waste transport.
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how can complementary protein foods help you meet your protein requirements?
Answers
Answer:
combining plant protein sources to achieve a better amino acid
Explanation:
Bringing it all together. Protein complementation is combining plant protein sources to achieve a better amino acid balance than either would have alone. Because of differences in amino acid make-up, when plant sources are combined, the strengths of one make up for the deficiencies in another