¿cómo hago que el agua de la lluvia sea apto para el ser humano?​

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Use the distance formula to determine weather each pair of segments have the same length

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