The attempts to tell us what it "feels like" in cold, windy conditions. a) wind chill indexb) heat indexc) cooling degree-daysd) growing degree-days

hey there!

so, when you eat, your teeth chew and grind food into smaller pieces. this is mechanical digestion. then reactions aided by digestive enzymes break down large food molecules into smaller molecules. this is chemical digestion. the two processes change the food into simpler substances that can be used by the body for raw materials and energy.

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tobey