Environmental Trait Influences Practice Test

Two tomato plants of the same type were grown for 2 months. One in a warm greenhouse grew 24 inches tall with 10 tomatoes; one in a cool area grew 12 inches tall with 3 tomatoes. What caused the trait difference?

Maya planted two flowers from the same seeds. One flower was well-watered and had 8 big bright petals. The other was under-watered and had 4 small wilted petals. What caused the petal difference between the two flowers?