(brainliest) Many birds are monogamous, meaning that one male and one female mate for an entire breeding season. Other animals are naturally polygamous, meaning one female has the opportunity to mate with many males or one male mates with multiple females. Do you think monogamy and polygamy are reproductive strategies? In terms of species survival, what are the advantages and disadvantages of each method?

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