The process by which leukocytes attack invading microorganisms and clean up cellular debris by consuming the material, or eating cells, is known as .

The leukocytes are capable of attacking and digesting any foreign antigen that enters the body of an organism. The cellular debris is also cleaned by up by these specialized leukocytes known as phagocytes. The digestion of the foreign microorganisms and the cleaning up of the debris is done by phagocytes via the process which is known as phagocytosis. In this process, the phagocyte, engulfs the foreign particle, and the enzymes known as lysosomes digests it.

Hence, the answer is ' phagocytosis'.

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."