The answer to this question would be: <span>B) 5,400 J
</span>The question for this problem probably asking about the energy for the secondary consumer. In the energy pyramid, the total energy transferred will be only 10% of total energy received/provided. That means the 54,000J from primary will be decreased into 5,400J in the secondary and then into 540J into the tertiary.
D)all of the above
<span>Homeostasis is the property of a system, either open or closed, that regulates its internal environment and tends to maintain a stable, constant condition within an organism. (Eg controlling amount of sugar in the bloodstream, keeping waste levels at acceptable levels.) </span>
<span>Opening and closing stomata controls the gas levels within the plant. </span>
<span>Converting excess sugar molecules to a lesser number of starch molecules regulates sugar levels. </span>
<span>Excreting waste through the cell membrane prevents waste build-up.</span>
Their main goal is <span>to change practice. </span>
Answer:
The sickle-cell allele is maintained through natural selection because of something called the heterozygote advantage.
Explanation:
Hope it helps
C.
It is hard for soil to become fertile when it can not get water from the rain, and high temperatures would cause any water the soil does get to evaporate.
