Rain forest is the name given to such a region.
Step-by-step explanation:
Rain forests are supposed to be the lungs of the world due to their high levels of Co2 consumption and Oxygen emission.. This is possible because of the extremely dense vegetation in the area.
The fauna and flora that is characterized as such is found in the tropical regions of the world which includes places like Amazon in South America and places in India as well as some in Africa too.
These places have a huge range of species of flora and fauna and receive precipitation all over the year as they are green all the time.