Since diffusion is the primary method one celled organisms use for material transport, the ratio of____________ is an important factor for them

Answer: A, D

Explanation: Gaseous cycles include those of nitrogen, oxygen, carbon, and water; sedimentary cycles include those of iron, calcium, phosphorus, and other more earthbound elements. In a sedimentary cycle elements move from land to water to sediment. Main reservoirs are the soil and sedimentary rocks.

Answer:

It's D for Plato users.

Explanation:

All affect the effectiveness of the disinfectant, namely the species of bacteria you were working with, the temperature of the room, the concentration of bacteria on the lab bench, and whether the lab bench was recently cleaned.

Disinfection is intended to kill or inactivate pathogenic microorganisms in the water. Important pathogenic bacteria that are often found in drinking water are Salmonella, Shigella, enterotoxigenic E. coli, Campylobacter, Vibro, and Yersinia.

The effectiveness of disinfectants is influenced by several factors, including duration of exposure, temperature, disinfectant concentration, pH, and the absence of interfering substances. pH is an important factor in determining the effectiveness of a disinfectant, for example, chlorine compounds will lose their disinfecting activity at an environmental pH of more than 10. An example of an interfering compound that can reduce the effectiveness of a disinfectant is an organic compound.

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Answer:

Every new DNA copy is going to have damaged DNA

Explanation:

Ultraviolet light might cause DNA damage, which is known as a mutation. Every new DNA copy is going to have damaged DNA that take place during the synthesis, or S phase, and mitosis of the cell cycle.

Mutations are defined as  the change in the nucleotide sequence of genetic material due to different process such as substitution, deletion or insertion of the nucleotides leading to changed or faulty protein.

The type of mutations leads to the early and delayed termination of the transcription of a gene, mutation of a single nucleotide leads to termination of transcription otherwise called as nonsense mutation.

If a mutation shows no effect on the protein, known as the silent mutation.

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Answer: C

Explanation: Disruption of animal habitats

Answer:The Precambrian Era is the largest on Earth, voering about 600m years, which is around 90% of Earth's age. Nota that this isn't an official era or period, so I recommend calling it "time".

A susystem is system, that functions independently, within another bigger system.

Given all that, let's work trough the differences:

During the precambrian time, some subsystems where not existent.

In the beginning, oceans, lakes and rivers didn't exist, since there still wasn't liquid  on Earth.

Since there wasn't a source of water, trees where also inexistant and started develpoing only later on, when soil was adequate (but still in the precambrian era, remember, it covers about 600 million years).

The geopshere was also different at the start of the Precambrian time. It was more active, there still wasn't inactive volcanoes and these where more common and frequent.

The atmosphere was also very different. Gases at that time where different, and the concentration of these as well.

Explanation: Hope I helped

Answer:

b

Explanation:

In creating nanoparticles of a smaller size, the volume of the silver nitrate,the temperature and time can be reduced,surfactant can be altered, different reducing agent and altering AgNO3. In order to create nanoparticles of a larger size, silver nitrate should be increased, the temperature and time can be increased.

In order to create nanoparticles of a smaller size, the following experiment may be conducted.                                                                      The volume of the silver nitrate solution should be reduced.                                                                                                                    The temperature and time of the reduction step can be reduced.                                                                                                       The amount of surfactant, as well as its type, can be altered.                                                                                                                    A different reducing agent can be used.                                                                                                                                              Altering the concentration of AgNO3, surfactant and/or sodium borohydride.                                                                                       In order to create nanoparticles of a larger size, the following experiment may be conducted.                                                                 The volume of the silver nitrate solution should be increased.                                                                                                       The temperature and time of the reduction step can be increased.                                                                                                 The amount of surfactant, as well as its type, can be altered.                                                                                                                         A different reducing agent can be used.                                                                                                                                                        Altering the concentration of AgNO3, surfactant and/or sodium borohydride.  

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Answer:

Explanation:

Hair type is an interesting case of something called incomplete dominance. What this means is that with hair type, if you have one of each version of the gene, you get a mix of the two or wavy hair. So for hair type, CC gives curly, Cs gives wavy and ss gives straight hair. Back to your specific situation.

Answer:

The answer will be listed below.

Explanation:

A monomer is a type of molecule that has the ability to chemically bond with other molecules in a long chain; a polymer is a chain of an unspecified number of monomers. Essentially, monomers are the building blocks of polymers, which are more complex type of molecules.

Answer:

It's no A

It's not B

it's C

Explanation:

Humans and lizards

Is more closely to each other

Answer:

In humans the transport system occurs through vein, artery and capillaries. Whereas, in plants , it occurs through the xylem vessels, tracheids and phloem sieve tubes.

Explanation:

Answer:

As Earth cooled, water in the atmosphere condensed

Explanation:

dues to high temps, water evaporated.

as the earth's surface cooled, water condensed and formed oceans

rocks hardened to form continents

The specimen pictured lived in south africa, was discovered by raymond dart in 1925, and was approximately 3 years old at time of death that fossil/species is Australopithecus africanus.

When the skull of this 3-year-old child was discovered in 1924, it was one of the first early human fossils discovered in Africa and the first early human fossil discovery to garner significant attention to this area as the birthplace of the human family tree. But it still took more than 20 years for scientists to acknowledge Africa's significance as a key region in the history of human evolution.

Researchers initially observed signs of early human upright, two-legged (bipedal) walking in the preserved anatomy of the Taung Child. The location of the Taung Child's foramen magnum, or the opening through which the spinal cord and the brain are connected, served as proof.This spinal cord opening is located near the front of the Taung Child's skull, which is a feature connected to bipedal movement. The foramen magnum of a four-legged ape is located at the back of the head to keep its eyes forward (and not down) when it moves, in contrast to a bipedal adaption that allows the head to balance atop the neck.

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The functions of the rib cage and the spine are similar by they protect the internal organs of the body.

A Rib cage may be defined as an axial skeleton that forms a bony frame around the chest.

The function of a rib cage is to protect the internal organ specifically, the spine also deals with the same function in the backside of the body.

Apart from this, Spine also functions in keeping the body straight while walking, sitting, or moving.

Therefore, the functions of the rib cage and the spine are similar by they protect the internal organs of the body.

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Answer:

D. Linnaeus

I hope this helps, have a great rest of your day

Answer:

Linnaeus

Explanation:

All modern humans are classified into the species Homo sapiens, coined by Carl Linnaeus in his 1735 work systems Naturea.

Birds help take care of each other's young to increase their chances of survival, and the behavior is passed on to offspring

Complete question:

You will find the cladogram in the attached files

Answer:

Explanation:  

Based on this cladogram, the order of changes was multicellularity, vascular system, flowers.

Multicellularity. The first division or point of divergence is located between moss and the rest of the organisms. Moss is included in the Bryophyta group, characterized for being the first terrestrial plants. They are not vascular plants, and their general structure is simple but pluricellular.  Multicellularity implicates association between different cells that specialized in accomplishing different functions. This complex association works to make the organism survive. Algae might be unicellular or pluricellular. Although is not the same, unicellular algae might form colonies, that are groups of cells agglomerated.

Xylem/ Phloem: The second change is related to the vascular system.  Cycads are gymnosperms. These are vascular plants that produce naked seeds. The vascular system developed by gymnosperms is very elaborated, with secondary growth, and including supporting cells that allow these plants to get bigger dimensions, particularly in height.  

Flowers: The last change is related to the emergence of flowers. Arabidopsis is included in the angiosperm group, the most evolved one, with great capabilities of reproduction and dispersion. They have flowers, which carry the reproductive structures. Once occurred fertilization,  fruits develop and carry the seeds. Flowers might be unisexual or hermaphrodites. Their vascular system is also very complex and adapted to different environments.

The Punnett Square charted out the chances that Emma would be heterozygous or a carrier as 25%. In order to analyze this, it is important to understand how the Punnett Square works.

The Punnett Square utilizes genetic information from two different parents or sources in order to predict the possible offspring outcomes. It organizes and arranges each allele in different combinations, with the most common allele at the top of each box in a square. In this specific Punnett Square, the topalleles for each parent involved were S and s with the dominant-allele S being used for this example.

As such, the square reveals that for each of the four possible gamete combinations among the parents, there is one potential offspring result Combo-A which is composed of both dominant-alleles (SS) and one potential offspring result Combo-B which is composed of both recessive-alleles (ss). Finally, there is one potential offspring result Combo-C which is composed of both heterozygous-alleles (Ss).

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Photosynthesis and respiration depend on each other and complement themselves. Option D. Photosynthesis removes carbon dioxide from the atmosphere and cellular respiration replaces it.

The correct option is D. Photosynthesis removes carbon dioxide from the atmosphere and cellular respiration replaces it.

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Adenine, thymine, thymine, cytosine, guanine, and adenine is the correct order in which nucleotides add on single strand DNA.

The process of DNA replication is crucial for cells to divide and create an exact copy of their DNA. Enzymes like helicase play a vital role in unwinding and separating the two strands of the double helix, creating a replication fork that serves as the starting point for this process. As DNA polymerase adds nucleotides to the new strand using the existing strand as a template, it follows specific rules of complementary base pairing: adenine (A) pairs with thymine (T), while cytosine (C) pairs with guanine (G).

During DNA replication, the order in which free nucleotides will add on to a single strand of DNA with the sequence ATTGCA is crucial. The correct sequence of nucleotides that will bind to this template strand is adenine (A), thymine (T), thymine (T), cytosine (C), guanine (G) and adenine (A). This follows the complementary base pairing rules where A pairs with T and C pairs with G. By following these rules, the newly synthesized strand will have a correct sequence of ATTTGC, ensuring accurate replication.

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Answer:

veins

Explanation:

Veins are into the heart

Arteries are Away from the heart

Genetic diversity is a biological term that explains the variations that exists in the genetic makeup of organisms in a population. It also ensures survival and prevents inbreeding effects.

The process that lead to an increase in genetic diversity include:

I. Random fertilization

III. Independent assortment of chromosomes

IV. Crossing over of alleles   (I, III, and IV)

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Answer:

A common birth defect that is usually due to an extra chromosome 21( trisomy 21) .

Answer:

C) month

Explanation:

it takes around 27 days, so rounded that would be about a month

Answer:

b. is a tapered, cone like region immediately inferior to the lumbar enlargement.

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The rate of appearance of water to the initial rate of the disappearance of oxygen is 2:1.

      2H2 + O2 ----> 2 H2O

From the equation,

we can conclude that 2 moles of water appear from 1 mole of O2.

Water (H2O) is an inorganic, transparent, tasteless, odorless, and almost colorless chemical substance that is the major ingredient of the Earth's hydrosphere as well as the fluids of all known living species. Even though it doesn't offer food, energy, or organic micronutrients, it is necessary for all currently understood forms of life.

Each of its molecules is made up of one oxygen and two hydrogen atoms that are joined together by covalent bonds, as evidenced by the chemical formula H2O. The hydrogen atoms are at an angle of 104.45° to the oxygen atom.

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In the given example, the conditioned stimulus is "the sound of Harmony opening a can with an electric can opener".

Classical conditioning is a type of learning process where an association is made between two stimuli. In this process, the stimulus that originally caused a response is paired with a new, neutral stimulus, which is repeated many times. As a result, the neutral stimulus will eventually evoke the same response as the original stimulus.

Harmony's cat starts to salivate when it hears the sound of the electric can opener opening a can. Initially, the sound of the electric can opener is a neutral stimulus, but when the cat starts to associate it with food, it becomes a conditioned stimulus. Therefore, in this example, the conditioned stimulus is "the sound of Harmony opening a can with an electric can opener."

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During the Great Depression, Keynes recommended fiscal policy in the form of increased government spending on social programs and infrastructure.

He believed that this increased spending would stimulate demand and lead to economic growth. Keynes argued that during a recession when private sector spending is low, the government should step in and spend more to make up for the shortfall in demand. In contrast, Keynes did not recommend tax increases or decreased government spending during a recession. Tax increases would take money out of the economy, decreasing demand and worsening the recession. Decreased government spending would also decrease demand and potentially lead to job losses in the public sector, further worsening the recession. Keynes also believed that monetary policy, in the form of encouraging savings or discouraging spending and investment, would not be effective during a recession.

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