I believe the answer is A. A single origin of modern people and eventual replacement of archaic homo sapiens throughout Africa, Asia and Europe. Out of Africa model; asserts that modern humans evolved relatively recently in Africa, migrated into Eurasia and replaced all populations which had descended from Homo erectus. After Homo erectus migrated out of Africa the different populations became reproductively isolated, evolving independently, and in some cases like the Neanderthals, into separate species. Homo sapiens arose in one place, probably Africa. Homo sapiens ultimately migrated out of Africa and replaced all other human populations, without interbreeding modern human variation is a relatively recent phenomenon.
As a cell grows, its volume increases more than its surface area so the answer is C
Answer:
Solute
Explanation:
Solute - The solute is the substance that is being dissolved by another substance. In the example above, the salt is the solute.
The ozone layer over the Arctic change with the seasons as "it peaks in spring and decreases in fall".
<u>Option: B</u>
<u>Explanation:</u>
The variations with the seasons in ozone layer over the Arctic is triggered by Polar Stratospheric Clouds (PSCs) developing in the polar regions during winter. These clouds have a surface area where the chemical reaction of CFC occurs at a rapid rate that induces ozone depletion in the polar stratosphere by as much as 50%. It occurs in the spring, as the temperature begins to warm up, resulting in an rise in the chemical reaction rate of these cloud surfaces.
Answer:
BRCA1 and BRCA2 are 2 mutations which cause cancer
Explanation:
although the question is incomplete