4) The Earth's atmosphere supports the biosphere by providing A. Protection from all of the sun's electromagnetic radiation
B. Gases that reflect energy back to the Earth
C. Energy that powers the ocean's tides
D. Matter cycling that moves materials between the atmospheric layers

~~16. while watching a special on animals, brianna discovers that hares tend to lose heat through their ears. based on this and what is known about surface-to-volume ratios, propose an explanation as to why hares that live in hot climates (such as the desert) have large, extended ears

What’s the student’s scientific question

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land