An animal family tree shows how different animals are related through evolution. It groups animals based on common ancestors and shared traits. The closer two animals are on the tree, the more closely related they are. The tree helps us understand how species have changed over time and how they share features like body structure, genes, or behavior. It also shows branches where species have split into new kinds, helping scientists study biodiversity and evolution.
Sexual Reproduction — involves two parents; offspring get genes from both (like mammals, birds).
Asexual Reproduction — one parent produces offspring identical to itself (like some starfish, sponges).
External Fertilization — eggs and sperm meet outside the body, often in water (like many fish and amphibians).
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