Explain why, a human zygote is more likely to grow into an adult than frog zygote.
A human zygote is more likely to grow into an adult than a frog zygote because, in humans, internal fertilization takes place.
The human zygote undergoes repeated division inside the human body and forms an embryo that implants in the uterus. The developing embryo receives nutrients and care from the mother's body to form an adult. As a human embryo develops internally, it protects itself from predators.
External fertilization takes place in the frog. A zygote is formed outside the frog body, thus it forms larvae rather than forming an adult.
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