I believe there has to be enough activation energy for a reaction to occur in the first place, if that is what you are referencing
Autotrophs are organisms that can make their own food for the biosphere.
This term comes from the Greek terms:
Auto- meaning "self" and Troph- meaning "feeding or growth"
So autotroph quite literally means "to feed oneself". Autotrophs, for the most part, use photosynthesis from sunlight to produce their own sugars.
Plants are the primary autotrophs on Earth!
Answer:
This occurs in the first trimester of pregnancy and is called implantation.
Explanation:
I hope this helped you, Brainliest is appreciated.
The answer is the digestive system!
the digestive system of the urchin is the largest.
