One disadvantage of external fertilization is that numerous gametes will not survive. Another disadvantage is that the offspring are not protected, which could lead to their death.
It depends. Are you talking about humans? 8D Humans use internal fertilization but the disadvantages in external fertilization is that a small number of eggs survive.
They Have Internal Fertilization
external fertilization is external
external fertilization
External fertilization and development
External fertilization is used by frogs, toads and fish. They produce many eggs but not many survive.
Clams utilize external fertilization.
Salmon use external fertilization
they use external fertilization.
Salmon use external fertilization
external
The advantages in external fertilization is that there are lots of egg cells produce but the disadvantages are that a small number survive because if you are using a frog, the egg cells get eaten or don't get fertilized.