Answer:
in which service is provided in lack substance in quantities
Explanation:
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The heavier the vehicle, the more work the brakes must do to stop it and the more heat they absorb. But the brakes, tires, springs and shock absorbers on heavy vehicles are designed to work best when the vehicle is fully loaded. Empty trucks require greater stopping distances, because an empty vehicle has less traction. It can bounce and lock up its wheels, giving much poorer braking. (This is not usually the case with buses.
Glands secrete hormones, chemical substances produced in the body that regulate the activity of cells or organs. Hormones regulate body growth, metabolism, and sexual development and function. The Pancreas is a the largest gland in the human body, and it secretes insulin. Insulin regulates blood glucose levels in your blood. Another gland is the Adrenal medulla. The adrenal medulla is positioned on top of your kidney and secretes norepinephrin which is the hormone secreted in the fight or flight response.