A. Què són els nivells d’organització? b. Quin és el nivell més simple?

c. Quina diferència hi ha entre un teixit i un òrgan?

d. A que correspon el nivell d’organisme?

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

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

for a different answer set the answer would be because the oxygen in the water had depleted (apex)