Question

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

Explanation:

The rule of 70 is a formula used to estimate the time it takes for a variable (such as population) to double. The formula is \( t=\frac{70}{r} \), where \( t \) is the time to double and \( r \) is the growth rate (expressed as a percentage). It has nothing to do with temperature change (\( 1^{st} \) option) or population shrinkage (\( 3^{rd} \) option).

Answer:

It helps estimate how fast the population will double.