Ruby-throated hummingbirds are migratory birds that spend the summer in Canada and the northern United States and the winter in Mexico and Central America. Since all ruby-throated hummingbirds migrate at around the same time each year, many populations that were possibly isolated during the winter intermingle during the summer breeding season. This annual migratory behavior results in a transfer of genetic information from one population to another, which is known as . A. natural selection B. genetic drift C. gene flow D. speciation

C.Gene flow

Explanation:

Gene flow the transfer of genetic variation from one population to another my dude.

glycolysis is a process that fuel your metabolism. it is apart of cellular respiration the process that produce atp.

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."