Answer:
its the Having less deer would increase the mountain lion dependency on rabbits, which would lead to fewer rabbits available for the hawks. but it might be the first one
Explanation:
Because the majority of cell differentiation occurs during the EMBRYONIC phase, .................. The embryonic stage of pregnancy is the period after implantation during which all the important organs and structures in the growing fetus is formed. Tetratogens are factors that caused malformation of embryo. Exposure to tetratogens during embryonic stage cause most destructive damages.
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(D) Nonpoint source pollution is difficult to regulate, because its source is difficult to track.