Answer:
c
Explanation:
Gas exchange. Gas exchange occurs as a result of respiration, when carbon dioxide is excreted and oxygen taken up, and photosynthesis, when oxygen is excreted and carbon dioxide is taken up. The rate of gas exchange is affected by: the area available for diffusion.
<span>47 chromosomes is the correct answer. Humans have 23 pairs of chromosomes, making 46 chromosomes in total. Down's syndrome is the addition of an extra chromosome on chromosome 21, leading to an uneven number.</span>
The agency that uses bioinformatics to maintain records of pharmaceutical research is FDA (food and drug administration). This technique deals with the analysis of such large sets of biological information, especially it applies to genomic information. It combines elements of molecular biology and computer science