Explain why not all living things on earth are yet well understood

The correct answer is - there are huge diversity and different type of organism on earth.

Explanation:

On the earth, the world of biology which deals with the living organism is very much rich. There is various kind of organisms with different shapes and sizes. Some are microscopic single-cell and some are huge multicellular animals.

It is found that there are 15 million species present on earth and only two million are known to science. There is almost 80 percent of organisms still need to be discovered and understood. Different types of life on earth yet to be discovered.