Cyanobacteria also known as one of the first organism on earth are responsible for producing nearly 80% of the oxygen on earth.
The answer should be reptiles!
The characteristics of reptiles are:
1. They are four-legged
2. They have an outer covering of scales
3. They breathe with the aid of lungs
4. Although most reptiles lay eggs, some also give birth to live young (fertilise internally)!
I hope this helps! :)
It converts Energy to food!
Hope this helps
This answer should be Detritivores but if that word doesn’t look familiar it could be decomposers