Определите слово

Определение: “This means the same as diversity or biodiversity. It is measure of how many different species exist in an area at a given time. There are various ways to calculate diversity, and the best way to measure it is a cause of arguements amongst scientists still.”

Первая буква: D

Ответ:  

Какому слову соответствует это определение?

Баллы "IQ": 0