Answer: Efficient functioning.
Explanation:
Cells require a lot of substances to both come into and leave the cell in order for the cell to accomplish it's functions. These substances can be anything from carbohydrates to water and they come into the cell through diffusion and osmosis.
The thing about diffusion however, is that it happens faster over shorter distances than longer distances. This is why cells are so small. They evolved to be that size to ensure that diffusion of these substances takes place relatively quickly so that they can use these substances to carry out their functions at a faster rate.
Because there is a limited amount of genes that are responsible for height/size/weight of an animal and the presence of these genes in the genome of an animal isn't really connected to the amount of genes that are present in that genome. For that reason, a big animal can have the same amount of genes as a small animal does.
Different animals have different adaptations due to their habitat, which help them survive. For example, the camel located in deserts have 2 humps where fat is stored which can be metabolised for energy.
The answer to that is true
You said "The arrow shoots forward towards its target". The only energy type that matches that description is the kinetic energy, which is also known as the energy of movement.
The kinetic energy, in your case, is generated when you let go of the bows string, releasing all the tension you created when you pulled it, on the arrow, which in turn makes it go forward.
Hope it helped,
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