(Question)
You are presented with the question "Many muscle fibers contracting at once can be induced by" and the following answer choices: - exposed genitalia - exposure to heat - sweating - exposed biceps - mechanical waves - Electrical energy - exposure to cold - Veins and arteries. Now knowing that shivering occurs when many muscles contract a little bit all at once and another response to cold is shivering, choose the best answer.
(Answer)
exposure to cold

(Question)
You are presented with the question "What causes the chemical disintegration of rocks?" and the following answer choices: - Dynamite - Gases - Disintegration rays - Moss - wind - Hammers - fungus - fungi Now knowing that moss causes chemical weathering and chemical weathering is the chemical disintigration of rocks, choose the best answer.
(Answer)
Moss

(Question)
You are presented with the question "what happens when muscular walls of blood vessels contract?" and the following answer choices: - matter vibrating - Dehydration - Leptospirosis - rapid expansion - at or near the margins - recovery time from fatigue - blood pressure rises - major threat to health Now knowing that constriction occurs when the muscular walls of blood vessels contract and constriction raises blood pressure, choose the best answer.
(Answer)
blood pressure rises