Explanation:
Capillaries are thinnest blood vessels there are in human body or basically in any multicellular living creature. Capillaries are so thin, they are like a sheet made of cells. So there is nothing like capillaries which can introduce blood with the materials to be absorbed without letting both of them mix directly. Arteries and veins are too thick to carry out such exchange.
1. 2.479 × 1015kilometres
2. idk
Answer:
Living things use structural strategies and behavioral strategies that increase their chances of reproduction.
Living things do so to reach the reproduction goal that is to pass genes on to offspring. For example: the pouch of a kangaroo, a frog croaking a mating call, and colorful petals of flower etcetera helps in increasing mating chances so that their genes can be followed to the generation.
Answer:
An acid is a substance that donates hydrogen ions. ... Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic
