Deforestation and compaction of land due to the population growth has reduced the absorptive capacity of the soil and accelerate water runoff. how does the accelerated runoff effect future water supply? ! 10 points to anyone who answers a) discharge of aquifers b) soil absorbs more water c) deficit in the recharge of aquifers d) aquifers become over-filled from flooding

 C) deficit in the recharge of aquifers  

Explanation:

Deforestation is a process of removal of the trees from the forests so as to clear up the land. The trees exhibit long penetrating roots which keeps the soil bound to them. The loss of trees will deteriorate the quality of soil making it infertile and compact. As, a result of this the absorptive capacity of the soil will be reduced and the water due to surface runoff accelerate and it will not seep in underground region where aquifers deposits.  

On the basis of the above description, C) deficit in the recharge of aquifers. is the correct option.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.