the answer is 21<span>% oxygen, </span>
Toxicology is the study of poison on living things
Answer:
Examples of Beneficial Mutation. Mutation, a change in the sequence of genes, is divided into various types such as beneficial, harmful, and neutral, based on their effects. ... Germ-line mutation occurs in the germ cells, and is inherited by the offspring via the reproduction cells.
Explanation:
Answer:
B) build wind-powered pumps to use groundwater