Magdalena Hess

Physics

10 September, 20:48

1. Why is Earth's temperature just right for life?

A: Earth's core is hot enough to heat Earth's surface.

B: Earth's magnetic field creates suitable temperatures on Earth's surface.

C: Earth's crust is warmed by heat from the sun

D: Earth's atmosphere traps heat from the sun, which makes Earth's temperature suitable for living things

2. Which of the following statrements accurately explains how Earth's atmosphere supports life

A: Earth's atmosphere contains 78 percent oxygen, which is essential for life.

B: Earth's atmosphere contains 21 percent oxygen, which many life forms need to survive

C: Earth's atmosphere contains more oxygen then carbon dioxide

D: Earth's atmosphere contains carbon dioxide, which all life forms breathe in