Explanation:
i think u should ask Google first i don't think my answer is right i don't to mark u wrong please sorry
According to finding of scientist, the earth is roughly 4,600 million years old. then the non abundant fossil that they dated was about 3,600 million years old. so the fraction or percent of <span>geologic time is :
3,600 / 4600 = 0.78 or 78 % of earth geologic time</span>
Not sure but i think its plants
Answer:
It moves by diffusion through small holes in the underside of the leaf called stomata.These let carbon dioxide reach the other cells in the leaf, and also let the oxygen produced in photosynthesis leave the leaf easily.
Answer:
A; test tube
Explanation:
In-vitro is defined as a technique of performing a given procedure in a controlled environment outside of a living organism. It does not correspond to the circumstances you would usually see in a living organism (since it is most likely in a test tube). This means that an in-vitro experiment could not be applied in a growth chamber in which outside/environmental factors affect the whole organism. You can also eliminate C since in vitro is exclusively taken place outside of a living organism. For D, you most likely wouldn't be able to observe much in a total vacuum as organisms work under regular Earth atmospheric conditions and a total vacuum would not accommodate that as it has a lower pressure.