Answer:
true
Explanation:because any living breathing organism is multicellular
Make a electron cloud and put 2 dots on the first layer and 7 on the outer layer
Answer:
B, the lion population will more likely survive
Explanation:
There are more lions than cheetahs, the cheetahs will die out due to low reproduction
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.
