Define external fertilization. Mention its disadvantages.

(N/A) External fertilization is the process in which the fusion of the male and the female gamete takes place outside the female body in an external medium,generally water.
Examples of organisms that exhibit external fertilization include fish,frogs,and starfish.
Disadvantages of external fertilization:
$1$. In external fertilization,eggs have less chance of being fertilized,which can lead to the wastage of a large number of eggs produced during the process.
$2$. There is an absence of proper parental care for the offspring,which results in a low survival rate for the progeny.