The biggest difference between prokaryotic and eukaryotic is that eukaryotic cells have a nucleus and prokaryotic cells do not.
Answer:
4
Explanation:
Producers are at the bottom of the energy pyramid because they prove the most energy, they make up most of the population, which is biomass. And the producers have the largest population, which is why they are at the bottom of the pyramid of numbers. Finally they are at the bottom of food chains and webs because they store the most energy inside of them.
In a closed ecological system, any waste products produced by one species must be used by at least one other species. If the purpose is to maintain a life form, such as a mouse or a human, waste products such as carbon dioxide, feces and urine must eventually be converted into oxygen, food, and water.
Answer:
proteins, because it helps in the regulatory function of the body.
