(Answered) Compare and contrast the challenges of fertilization in

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Compare and contrast the challenges of fertilization in aquatic vs. terrestrial environments.

As animals became increasingly complex, embryos required more help to support them through development. Explain the roles of the different extraembryonic membranes and why they are necessary to the embryo.

Simple animals have simple embryos that are free-living. How does an aquatic environment meet the needs of these embryos/larvae in place of extra embryonic membranes?

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