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Answer:
External fertilization refers to the process by which the fusion of gametes (sperm and egg) occurs outside the body of the organism.
This reproductive strategy is common among many aquatic organisms such as fish, amphibians, and some invertebrates. In external fertilization, both the male and female release their gametes into the surrounding environment, typically water, where fertilization takes place.
External fertilization often requires specific environmental conditions, such as water for aquatic organisms, to ensure the successful union of gametes and the subsequent development of offspring.
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