Answer:cell wall i believe
Explanation:
Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.
Hope this helps
Answer:
a complex series of feeding relationships with many organisms interacting and depending on each other
Explanation:
SI units are a modern form of the metric system.
