One-celled animal-like organisms found in decayed materials and contaminated watera. protozoab. spirillac. virusesd. fungi

A) Protozoa

Explanation:

Protozoa are the one celled organisms which belong to kingdom Protista and they are animal-like (named as protozoa). Moreover, they host dead organic matter and live in contaminated water.

Spirilla is bacteria which is not animal-like.

Viruses are non-living so they are not organisms.

Fungi is not animal-like or single celled.

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.