Why do sunspots appear darker than their surroundings? A.
They are masked by dust and gas passing between Earth and the Sun.
B.
They are warmer than their surrounding environment.
C.
They are cooler than their surrounding environment.
D.
They have a strong gravitational pull, similar to black holes.
E.
They lie in the shadow cast by the Moon and Earth.

What organ systems are working to you cool down after a workout?

What is the process of pulling apart an n2 molecule nevermind i got it

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.