(5.01 lc)which of the following is an example of a biotic factor? the salinity level in a salt marsh the temperature of water at the seafloor the shrimp population in a bay the amount of sunlight reaching a seagrass bed

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed