Which of these describes the loss of biodiversity?
a abnormal population growth rates, high life expectancy, and diverse industrial economies
b declining number and variety of the species in an area
c an equation relating the profitability of species to their abundance
d the greed of individuals compared with the interest of the common good

The answer is option B "declining number and variety of the species in an area." Biodiversity is a variety of life for example a ecosystem has many species which makes it a biodiversity. Now a loss of a biodiversity would be loosing a huge amount of species in that area or ecosystem which would mean the answer is option B.

Hope this helps.

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements