Ddt was banned from use as a pesticide in the united states because a. it caused the eggs of fish-eating birds to become thin and fragile. b. it was washed by rain into streams, rivers, lakes, and ponds. c. it was ingested by fish and other aquatic animals. d. all of the above.

and after water is usually warmed by the sun the water temperature raises and then evaporates .

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.

b a mature ovary of a plant.