They help work together because when the heart pmps blood through the body and the cells flow through the blood non stop its like a barrier of protection
Answer:
The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the phospholipid bilayer with embedded proteins.
Answer:
Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis. Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.
Explanation:
a - fossil fuels
step by step explanation:
fossil fuels are non-renewable and will run out