I think its C. global warming
because the other one directly threats aquatic bio diversity while global warming doesn't just affect aquatic biodiversity
OmposingFossils in the museums are coated with chemicals to prevent the bones from decomposing.
Answer:
Sexual reproduction increases the genetic variation within the population, because new individuals are made by randomly combining genetic material from two parents. Because only fit individuals reach sexual maturity and reproduce, the overall population tends toward increasing fitness in its environment.
Explanation:
Answer:
cytoskeleton
Explanation:
cytoskeleton is a microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence.