Facts about animals

Birds are an extremely diverse group of vertebrates that inhabit the entire world and even the Antarctic continent. The main feature that distinguishes them from the other classes of animals is the transformation of their forelegs into wings. Birds have a great variety of shapes, colors, and sizes. There are some...

Alligators and crocodiles are easily confused because they belong to the same phylogenetic order. Also, both are large reptiles with tough skin, long tails, stubby legs, elongated snouts, and large teeth. Both have been around for a very long time, 83 million years, and have changed little since then. However,...

The reason living things breathe is to get the oxygen they need and get rid of carbon dioxide waste. Plants and animals breathe in different ways. Firstly, plants mainly breathe in CO2, while animals use the gas that plants exhale, oxygen. Animals also have different forms of respiration, and although...