Biodegradable means the things that can decompose naturally. For example, vegetables, fruits etc.
Biodiversity is the word that we use for the huge variety of living things on Earth, including plants, animals, fungi and bacteria.
Dodo
Dinosaurs
Black buck
Great auk
Tasmanian tiger
Classification is the grouping of living organisms into groups and subgroups.
Importance:
It is important because it makes the study of living things easier.
Extinct animals
If none of the animals of a species are left behind then they are called as extinct animals.
For example:
• Dodo
• Great auk
Endangered animals
A species is called endangered when it is at risk of extinction in near future.
For example:
• Indus dolphin
• Marco polo sheep
