Firstlt, how can you be so sure it is external?
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They Have Internal Fertilization
external fertilization is external
External fertilization and development
external fertilization
Salmon use external fertilization
Clams utilize external fertilization.
Salmon use external fertilization
they use external fertilization.
Well, the seahorse is basically a funny-looking fish, and egg laying and external fertilization is the method of procreation that most fish species have developed into using.
external
tiger
external fertilization