Meiosis.
Meiosis results in four cells of the original, each with a halved amount of chromosomes, you could say.
Interspecific competition I believe
The physical appearance of a trait is called the phenotype of an organism.
Answer:
Glucose, for your regular cellular respiration
Explanation:
The start of celllular respiration is glycolysis breaking down glucose. It usually is glucose, but lipids, carbohydrates, and proteins can be used too.