The answer is hydrogen bond.
Between water molecules, hydrogen bonds can be seen, which is due to the polar nature of water.
Circulatory and Respiratory systems working together to provide body with oxygen.
In facilitated diffusion, substances move into or out of cells down their concentration gradient through protein channels in the cell membrane. Simple diffusion and facilitated diffusion are similar in that both involve movement down the concentration gradient.
I believe heterotrophs are organisms that get their energy by eating other organisms. These organisms are also called predators
Because u might have made a mistake on the first investigation so u want to repeat it a few more times
