Ddt is a synthetic compound commonly used as an insecticide. it was used to control mosquito species that commonly spread diseases like malaria. the data show the percent resistance for three species of mosquitoes over three decades. what explains the trend seen in the data? a) genetic drift resulted in the random deaths of non-resistant insects, leaving only resistant mosquitoes to breed. b) artificial selection favored genotypes that were bred by humans to maintain the desired traits in the mosquito populations. c) gene flow between the three species increased the genetic diversity of the populations, resulting in more ddt-resistant species over time. d) natural selection favored resistant members of the species, which survived and reproduced at a greater frequency than non-resistant mosquitoes. el

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."    

japan is the correct anwser because i already took the test and i passed it