Which of the following statements about pesticides is true? a. pesticide cost is clearly less than the benefits for all humans. b. pesticide use has brought only good things to humans. c. pesticide use is a relatively modern phenomenon. d. pesticides possess an inherent degree of toxicity to some living organism.

Option (D).

Explanation:

Pesticide are the chemicals used to kill pests or other harmful organisms. They are mainly used for the safety of agriculture crops.

Pesticides are quiet useful in the agriculture fields but some organisms has shown an inherent degree of pesticide. Pesticide doesnot degrade easily and accumulate in further trophic levels in the environment. Pesticide accumulation leads to the phenomena of biological magnification.

Thus, the correct answer is option (d).

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.