The total amount of water in the planet
Answer:
c. A at the top of the saturated zone.
Probably not, but the matter is still being debated. The nearest common ancestor of birds mammals was probably an eight- inch long reptile that lived anywhere between 320 and 340 million years ago. Its an sector 360 million years ago was still a fish , four- footed, with lungs, but relying mainly on gill- breathing, and just occasionally dragging itself on to land for brief periods.
Answer:
<u><em>The above statement is true.</em></u>
Explanation:
A proto-oncogene can be described as a gene which is normal but if mutation occurs then it can be converted into a cancerous gene. Proto oncogenes have different functions to perform. Some of them act as signals for cell division while others might be involved in the process of apoptosis. A point mutation can be described as a mutation by which just a single nucleotide gets changed. Even a change in the single nucleotide can cause a proto oncogene to convert into an oncogene and cause cancer.
