The answer is A I believe
He observed 15 different finch species that originated as one ancestral bird. all differing in body shape, beak size, and mating habbits
The mitochondria is the powerhouse, or in a sense the brain of the cell. The plant would be unable to (a) carry out respiration
Eugene is running and needs more energy. He drinks a sports drink with sugar, but that sugar needs to be converted to another form of chemical energy forhis leg muscles to be able to use it. The process that will convert the sugar to energy that his cells can use is cellular respiration
hope it helps
