What is a structure and functions of an animal cell?

They are building blocks of each and every animal.

Cells do different functions like extracting energy, carrying nutrients, Receive and send hormones, etc.

Their shape can be in a particulat form. RBCs are round or irregular.

This is easy. I gave very less explanation.

https://biology.tutorvista.com/animal-and-plant-cells/animal-cell.html?view=simple

coconut why: has water in it : )

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