PLS help me ill give you brainliest Which statement would be used in an argument against the use of human embryonic stem cells for therapy?

A. Obtaining embryonic stem cells for use in therapy requires the destruction of embryos.

B. Embryonic stem cells are limited in their ability to become different types of cells.

C. It is difficult to grow embryonic stem cells in laboratory cultures, so they are not a practical choice for stem cell therapy.

D. Embryonic stem cells originate in plants, so the likelihood of rejection by a patient’s body is high.

A. Obtaining embryonic stem cells for use in therapy requires the destruction of embryos.

Explanation:

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."