A mutation occurs in a mosquito. As a result, some of the mosquitos offspring are a resistant to a chemical used to kill mosquitoes. They survive when the chemical is sprayed. Explain why the mosquitos offspring has resistance to the chemical and whether the effect of the mutation is beneficial, neutral, or harmful to the mosquitos.

- Mosquitoes acquired resistance by natural selection.

- In this case, a beneficial mutation fixed in the population.

Explanation:

Natural selection can be defined as the process by which individuals that exhibit certain phenotypic traits in a given environment have more chances to survive and reproduce. Mutations are random genetic changes produced during the replication of DNA. In general, mutations have a negative effect, but there are situations where mutations confer an adaptive advantage. Natural selection, which is a nor random process, favors mutations that give an adaptive advantage. In this case, resistant mutant mosquitoes are able to survive and reproduce, thereby these mutations will pass on to their offspring.

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."    

option c is the correct answer.