Answer:
homologous, high levels of, natural selection
Eukaryotic cells are cells that have all of the different kinds of organelles, like the nucleus. Also they at the cells that make up animals.
Pollution is always a good way to go but you don't have to do air pollution you can do water pollution or both air and water pollution.
Answer:
Your kidneys also remove acid that is produced by the cells of your body and maintain a healthy balance of water, salts, and minerals—such as sodium, calcium, phosphorus, and potassium—in your blood. Without this balance, nerves, muscles, and other tissues in your body may not work normally.
