Firstly light is an external stimuli. in plants - shoots are positively phototrophic while roots are negatively phototrophic.
I don't have enough information but it could be natural selection or mutations.
D. it is breathed out of the body by the lungs
It then enters the atmosphere and can be used by plants in photosynthesis to produce oxygen and glucose. Hope this helped :) if it did, please let me know by marking this answer as "brainliest!"
They form natural gas or fuel and coal.
The substance that is getting changed / affected by another chemical substance
