Answer:
Light energy (sunlight)
By autotrophs
As they make food from it
Science is the study and learning mechanism of the world and how everything is created as well as used today and billion of years ago
The answer is when levels of the amino acid are high, it binds to the repressor, ending the synthesis of this amino acid
Cause its an extraordinary place
There are many biotic elements in a rainforest biome. But the most obvious one is trees, because biotic means living and trees are living.