<u>It is D. 3.5 billion years. </u>The "stromatolites" are the earliest fossils that have been found.
Answer: The Neurons Make up the Brain!! Approximately 86 billion neurons
make up the whole brain!!;)
Types of Neurons (Nerve Cells)
The human brain has approximately 86 billion neurons.
Explanation: I basically out the same thing 3 times, my mistake!
A copperhead snake can both use asexual reproduction and asexual reproduction
<span>DNA probes or Gene Sequencing</span>
It looks like it could be chevron amethyst, which is a combination of amethyst and white quartz
