True true true true true true true true true true
False Primary Producers must form the largest base, because if there is a shortage of them, then there will be only a small amount for all others. This i guess can be called the Doppler's effect
('bit of history in here)
hope this helps
Answer: Y or Z im not to sure
Explanation:Auxin moves and stores up away from light
It would be Carbon Dioxide or CO2. hope that this helped hon :)