Scientists are worried about the future of some species that have experienced extreme decreases in both population size and genetic diversity, including cheetahs, bison, and elephant seals. using the concept of genetic diversity, explain why these animals may be in trouble even if their population sizes have increased in recent years.

Scientist are worried about the future of some animals because their number and genetic diversity both is very low.

Genetic variation in the organism of the same species or different species provides the stability for the survival.

Even if the number of organism increases its stability will be low because the genetic variation of those organism is low.

So, even after their number increases they can die due to less variability so genetic variation is equally important as like that of population size.

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."