A substance is red and is a gas. These are examples of chemical properties. A) true
B) false

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

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