What are the 4 primary functions of the respiratory system?
1) extchange of gas between atmosphere and blood
2) homeostatic regulation of body ph
3) protection from inhaled pathogens and irritating substances
4) vocalization

it is either c or d and i know for sure it is not a or b

i know can you plzz me with this question im sorry i didt answer your question i just need hel.

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.