The ecosystem with the greatest biodiversity is the one that has the greatest:

The ecosystem with the greatest biodiversity is the one that has the greatest:

A : variety of living things

B :average annual rainfall

C :cover of land area

D :elevation above sea level

Answer is A : variety of living things

Explanation:

Biodiversity, also known as biological diversity is a term used to describe the variety of life on earth across different levels of biological groups.  Some scientists have come up with some studies to show that there are over 10,000 species of birds, 200,000 species of flowering plants and almost one million species of insects in the world.  

Any environment that is said to have attained the highest level of biological diversity is one that has the most variety of these species of birds, flowering plants and insects.