Answer:
D. the book is in equilibrium
Explanation:
The book does have the force of gravity exerted on it, but it is able to rest on the table because the force of gravity is countered by the force of the table pushing up on the book.
Lions, giraffes, elephants and other animals gain their energy through various sources like the food they eat, water, oxygen, as well as the sun. However, they do get their energy mainly from the food that they eat and also water.
The answer would be the cracking of rock caused by the freezing and thawing of water.
