When a puncture wound becomes infected,

i think that it is plants

the question isn't complete here so i can't right an answer '_'

you click your profile picture in the top right corner and it says edit profile.

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