the development of a fish can depend on different species of it
Reptiles and birds are among the major groups of vertebrates that have internal fertilization and external development. Also included are monotremes and marsupials.
I remember a really great explanation in an old biology textbook, but I no longer have it and I'm having trouble finding a good answer for you online. One big advantage is that because the offspring are carried inside the mother and not in eggs, they are mobile and the mother can protect them from predators.
Animals that have internal development include mammals, birds, reptiles, and some fish. These animals give birth to fully formed young ones after the internal development process, where the embryo develops inside the mother's body. This allows the young ones to be born in a more advanced state compared to animals with external development.
Most fish use external reproduction, where eggs released by the female are fertilized by the male outside of their bodies. The fertilized eggs develop into larvae and eventually hatch as juvenile fish. Internal reproduction, where fertilization occurs inside the female's body, is rare among fish species.
heart racing internal or external
External
its internal
internal external not internal external not
internal
internal
There are many internal and external factors that affect child development. One internal factor is the genetic makeup of the child.
yes
both
development of an economy is an internal phenomenon as it comes from within.
lll
internal. They develop inside the womb
External, because they lay eggs.