Use the drop-down menus to complete the sentences about air pollution. The burning of causes dangerous gases to enter the atmosphere. Heavy, dense fog caused by dangerous gases mixing in the atmosphere is called . occurs when dangerous gases mix in the atmosphere and fall back to the surface in liquid form.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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