Why do endurance athletes load up on carbohydrate-containing foods before a big event? why don't they just fill up on fat and protein as well?

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

the animal that would be cutest if scaled down to the size of a cat? elephant