Question

why is the rule of 70 useful in environmental science? it helps predict how fast the population will shrink. it helps estimate how fast the population will double. it shows the change in temperature.

Explanation:

The rule of 70 is a formula used to estimate the doubling time of a quantity growing exponentially. In environmental science, it can be applied to estimate how fast a population (such as human, animal, or even a population of a pollutant - in a sense of growth) will double. The first option is incorrect as it refers to shrinkage (the rule of 70 is for growth - related doubling, not shrinkage which would use a different concept like half - life). The third option is incorrect as the rule of 70 has no direct relation to showing temperature change.

Answer:

B. It helps estimate how fast the population will double.