I would say A, B D are the correct answers
Explanation:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells.
cells are bigger than atoms. We can see cells with a microscope. Just as atoms have smaller parts called protons, neutrons, and electrons, cells have smaller parts, too. When you look at cells with a powerful microscope, you can clearly see hundreds of them.
Answer:
supplying oxygen to cells and tissues. providing essential nutrients to cells, such as amino acids, fatty acids, and glucose.
Explanation:
it jus makes sure that we get oxygen to our cells and tissues so we dont die.
