Below is the outline of the body of an essay on reptiles and amphibians.
1. Similarities between reptiles and amphibians
A. Physical characteristics/appearance: both animals are vertebrates, and both animals shed their skin.
B. Predator and prey: reptiles and amphibians are both predators and prey, both animals use their tongues to catch
prey.
C. Ectotherms both animals are ectothermic, or cold-blooded: they cannot regulate their own body temperatures
internally like mammals can.
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2. Differences between reptiles and amphibians
A. Eggs: amphibians lay their eggs in water, whereas reptiles lay their eggs on land.
B. Skin: amphibians have delicate, thin, semi-permeable skin, and they must live close to water or in very humid
habitats, reptiles have dry, scaly skin that enables them to live away from water.
C. Metamorphosis: amphibians go through a metamorphosis from a tadpole or larval stage with gills to an air-
breathing adult stage. Reptiles do not go through metamorphosis. When the young are born or hatched, they look like
miniature adults.
Use the outline above to write a 3sentence introduction. Be sure to include a hook in the introduction.