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

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?