Which of the following statements is true?

A cross between two RR plants will produce rr offspring.
Dominant genes are stronger than recessive genes.
Gregor Mendel created the Punnet Square to organize his experimental results.
In incomplete dominance, two or more genes are equally dominant.

Dominant genes are stronger than recessive genes

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