It would be difficult to find the ideal CO2 level with a low light intensity because the plant will have a difficult time trying to survive.
The answer to #2 Is a..biota is the life of "a" plant, or animal (etc.) of the particular region/habitat, etc.
It is released through nitrogen - fixing bacteria
Can you please display a picture of the "rock below in Whistler, Canada"? It'll make the question easier to answer.
Answer:
The angle and location
Explanation:
There are some who can't perceive the order of red and green together. Having it angled up and down is safer because you know out of common sense that red is on top and green is on the bottom. Having it sideways makes the light elevated on the same level, deceiving the eye better.
