What is the skin stretched across tube in outer ear called

In what for do plants utilize nitrogen? why do they need nitrogen?

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.

Which diagram best represents the chromosomes that would be found in a two new skin cells produced as a result of this process?