Which of the following best explains why deforestation increases the risk of floods in an area?
a. tree leaves catch and retain rain water.
b. trees block the free flow of water.
c. deforestation increases precipitation.
d. tree roots improve soil water retention.

The choice that best explains why deforestation increases the risk of floods in an area is letter D: Tree roots improve soil water retention. Tree roots’ function is to absorb the water from the soil because it uses this water as his food to sustain its plant functions.

answer they showed that organic molecules such as amino acids could be produced from inoragnic molecules;

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.