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
Photosynthesis.. hope I helped (:
Answer:
A. is repeated many times to ensure that the results are accurate
Explanation:
A controlled experiment is repeated many times to ensure that the results are accurate