Two organisms we have dissected so far is the fish and the frog. They are similar because they must both keep their skin wet and moist to prevent them from drying out. Also, they both lay eggs and they both have gills. However, a frog only has gills while it's still a tadpole. Lastly, another similarity between these 2 species is that they both have darker dorsal surfaces and lighter ventral surfaces.
Although the fish and frog share many similarities, they also share many differences. Firstly, a frog is semi-aquatic while a fish is fully aquatic; a frog can live on both land and water, but a fish can only survive in water. Frogs are amphibious - they live in and out of the water. Fish can only live in the water; fish can only stay underwater with the help of gills to breathe and cannot come out of water due to the absence of a lung to help it breathe on land. Also, frogs have arms and legs and fish do not. Furthermore, fishes have scales and fins, both of which frogs do not have.
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