Because Precambrian rocks are in short supply, hence fossil evidence is harder to find.they only discovers sections of some Precambrian rocks there were no bones or shells to be permineralized.
Answer:
It releases carbon dioxide and decreases Earth's supply of oxygen. It absorbs oxygen, thus decreasing Earth's oxygen supply
Explanation:
Ok here I go The answer is A
the believe they move inside the membrane which is creating a gradient
Our central nervous system is made up of two tissues: the gray matter and the white matter. The gray matter is composed of the dendrites and the axon terminals where synapses are. These synapses are the links between neurons that transmits electrochemical signals. The white matter, on the other hand, is composed of axons that connect all the gray matter together. Therefore, the answer is: <span>white matter is primarily in the CNS in the presence of myelinated axons</span>
