The two groups of bacteria responsible for nitrogen fixation are found in Choose... and in the roots of Choose... .

the answer to your question is tooth decay.

ask your friends for what they got then copy it down if you don't have any friends which is fine than google it or pay the teacher

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.