Why do fats have higher caloric value than other organic molecules?

Why do oceanic plates tend to subduction when colliding with a continental plate

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.

What will happen if two of the base pairs of the stand of the dna are switched