Nearly 50% of water sources in the united states are believed to be polluted. select the best answer from the choices provided t f

The correct answer for above statement is:

The main source of water is in the ground and the groundwater gets constantly more polluted with road salt, oil, gas and other chemicals (and as you can see, these are all manmade products).Sewage, trash and liquid waste of households, agricultural lands and factories are released into lakes and rivers.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.