If a heterozygous fire-breathing dragon is crossed with one that does not
breathe fire, what proportion of their
offspring will be fire breathers?

genetic variation will increase because of a new habitat and food source.

explanation:

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

answer; the above statement/question is (false);