How has deforestation in Haiti altered the climate? a. The loss of trees resulted in less water vapor in the atmosphere and thus less rain. B. Deforestation has resulted in widespread extinction of plants. C. Without trees’ root systems to hold it in place, rains have washed away the topsoil. D. Deforestation has not altered Haiti’s climate. Please select the best answer from the choices provided A B C D.

The bacteria found in a soil is usually harmful and measure are taken to remove any traces of microorganisms 1. true 2. false

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided

What form of anesthetic was used for field surgery