Which of the following is not an example of carbon in the nonliving environment? a) soil b) limestone c) water d) metal

i believe the answer is c

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers