Answer:
Animals at the top of the food chain are too hard to be caught and eaten, while plants and smaller animals are eaten easily.
Explanation:
None...........................probably mars
Structurally, DNA and RNA are nearly identical. However, there are three fundamental differences that account for the very different functions of the two molecules. RNA has a ribose sugar instead of deoxyribose sugar like DNA.
A vaccine uses a live pathogen that is too weak to make you sick. Once it enters your body you defeat it easily. Now that yur body is familiar with it your body can fight off the disease in the future.
