Which evidence is most likely used to indicate the beginning of solar system formation?
Materials combined to form a mass.
Materials were pulled together by gravity.
Water condensed and collected to form oceans.
Different species of microorganisms lived on Earth.

Option B: Materials were pulled together by gravity.

Explanation:

The solar system formed from the gravitational collapse of a huge molecular cloud. Stars and planets, including our sun, formed because of this.

B:Materials were pulled together by gravity.

Explanation:

I just took the test

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."    

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )