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irakobra [83]
2 years ago
15

How many levels of classification do we use today?

Biology
2 answers:
Inessa05 [86]2 years ago
5 0
8 we use 8  i think , any answer choices ?
Mila [183]2 years ago
3 0
Scientists today use 8 levels of classification.<span />
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The caretaker of a farm feeds hay to the cows to procure milk from them. How much energy will the cows get from the hay?
nikitadnepr [17]

<u>Answer</u>: C) 10%.

<u>Explanation</u>:

  • The cow will get only 10% energy from the hay as the transfer of energy from a lower to a higher trophic level follows the ten percent law.
  • According to the ten percent law of energy transfer, only 10 percent of the total energy gets transferred to the next trophic level in a food chain.
  • For example, if the hay had 100 joules of energy, the cow will get only 10% of 100 J i.e 10 J energy.
  • The reason why only ten percent energy is transferred is because the rest is lost in the form of heat in the atmosphere.
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3 years ago
The population in South Africa is more prone to sickle cell anemia (genotype "ss"). People with genotype "ss" survive only up to
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The answer is stabilizing selection.

<span>Sickle-cell anemia is a recessive disorder caused by the presence of two recessive alleles "s", so genotype is "ss". This disorder is characterized by sickle hemoglobin. In an area with malaria, heterozygous individuals "Ss" (with one dominant allele and one recessive allele) have an advantage. These individuals will have both normal and sickle hemoglobin. But pathogen that causes malaria affect only normal hemoglobin, so heterozygous individuals will have half of the hemoglobin resistant to the pathogen and those individuals are resistant to malaria.</span>

Stabilizing selection favors heterozygotes Ss,  disruptive selection favors dominant (SS) and recessive (ss) homozygotes, while directional selection favors dominant (SS) or recessive (ss) homozygote. Since in this example, people with genotype Ss (heterozygotes) are in advantage, then this is an example of stabilizing selection.

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What happens to glucose inside a cell during cellular respiration? A. The cell uses ATP to break down glucose. B. The cell uses
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<span>The cell uses oxygen to break down glucose which releases energy. This energy is stored in the form of ATP.</span>
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Intravenous Rehydration
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