Which of the following best describes the important function of the nucleolus? A.
It produces mRNA, which is responsible for carrying messages to the ribosomes, the organelles that carry out protein synthesis.
B.
It produces the main component of ribosomes, which are in turn responsible for synthesizing proteins.
C.
It holds enzymes that break down waste and debris, turning them into useful material for the cell.

climate change and pollution

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