Once the body has begun shivering, what happens to make it stop shivering? a) when body temperature returns to normal, the respiratory system sends a message to the skeletal system to stop shivering. b) when body temperature returns to normal, the nervous system sends a message to the muscular system to stop shivering. c) when body temperature is below normal, the nervous system sends a message to the skeletal system to stop shivering. d) when body temperature is below normal, the respiratory system sends a message to the muscular system to stop shivering.

Option B

Explanation:

When the body is exposed to the colder temperature then it starts shivering and this response is the part of homeostasis. During this process the nervous system sends signal to muscular system which stimulates shivering to make the body temperature normal.

When the body temperature comes to normal again the nervous system sends a signal to muscular system to stop the shivering.

Thus, the correct answer is "Option B".

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls