Linoleic acid: select one: a. has two double bonds, one between carbos 8 and 9, one between carbons 11 and 12 b. has shortened by 2 carbons, with a double bond bridging the original carbons 9 and 12 c. is an omega-3 fatty acid d. is labeled 18: 2(δ 9,12): e. all of the above.

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