Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
Answer:
The sunflower plants shown are the same species. The differences in
height among the plants is an example of variation
Explanation:
Variation entails difference in a condition which is exactly what happened as regards sunflower plant with different height
True if u know that humans are