Chapter 1: An Introduction to Life on Earth

1.	The process of homeostasis is: [Hint]
2.	Living systems need energy to: [Hint]
3.	The complexity of living systems: [Hint]
4.	Identify a characteristic that is representative of some, but not all, life-forms. [Hint]
Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.