Answer:
2.7 billion
Explanation:
This period is referred to as the Great Oxygenation Event. This period saw the evolution of photosynthetic organisms (cyanobacteria) that utilized carbon dioxide (that dominated the atmosphere then) and sunlight to manufacture their energy molecules-glucose. Photosynthesis produces oxygen as a byproduct that is evolved into the atmosphere. As these photosynthetic organisms proliferated on earth, the atmosphere composition changed to become partly dominated by oxygen (which is an oxidaton agent) with less and less carbon dioxide.
1. C) The soil will have no nutrients to grow the corn.
2. C) Crops may cause an increase of allergic reactions in humans
3. B) Decomposers
I believe it is variables bc it includes independent, dependent, and controls
Answer:
which structure does not belong to the pulmonary circuit?
A) left ventricle
B) right atrium
C) right ventricle
D) pulmonary trunk.
please help and define the difference in pulmonary circuit and pulmonary circulation. thanks
Blood Glucose Level Control, if blood glucose level is too high your pancreas will release insulin, making It an important contribution to homeostasis. I think. pretty sure. hope this helps !
