Temperature affects the plants because if its too cold a plant would not grow.
I think you just answered your question. They encourage adolescents to eat calcium-rich foods because it aids in bone formation, like you said.
3 examples would be touch, light and chemical.
and the most common signal would be chemical.
Hope this helps! (:
Answer:
Below
Explanation:
The midrib (the lines in the leaf) is more dispersed in the aspen leaf compared to the more heavily structured redbud leaf. The Redbud has a heart shape while the aspen leaf has a tear drop shape.
