Answer:
The cell theory developed most quickly due to the invention of the microscope. Robert Hooke was the first scientist who saw cells in cork. After this discovery, a wide numbered of researches were made and cell theory was developed. The basic cell theory explained that how every living thing was made up of cells. After this, a lot of additions have been made in the cell theory and today the cell theory is known to have five basic postulates.
B. A decrease in gene flow
C. An increase in gene flow
D. an increase in genetic drift
Reproductive isolation within a species causes is an increase in gene flow. The correct option is C.
Reproduction isolation is a mechanism constituted by some factors like behavior, physiological process, etc. by which the species does not reproduce with other species.
Gene flow is the flow of genes in forward generations, and reproduction isolation increase the gene flow within species.
Thus, option C. An increase in gene flow is correct.
Learn more about reproductive isolation, here:
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Answer:
c
Explanation:
i did this in class a few days ago i know this is right
Mesozoic
Cenozoic
Paleozoic
Precambrian
I believe it was the Paleozoic period
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Answer:
Human activities have adversely affected the ecosystem because human needs wood for making houses so they cut the trees and the organisms lives there loss their habitat and whole ecosystem is disturbed. Tropical forest is also called lungs of planet earth because they provide oxygen to the atmosphere and absorbs carbondioxide gas in large amounts. About half of world species lives in these forest. If humans continue to cut these forest all the species lives their will be vanished and affected the whole world.