Most sand dunes are created by deposition by Wind.
Answer:
Some sources of noise pollution are as follows:
(1) Televisions and transistors running at high volumes
(2) Loudspeakers and crackers
(3) Horns of buses, cars and trucks
Noise pollution can be hazardous to human health in the following ways: Hypertension: It is a direct result of noise pollution which is caused due to elevated blood levels for a longer duration.
Answer:
Dry gangrene
Explanation:
Dry gangrene occurs when blood supply to tissues gradually stops. The affected part becomes dry, shrinks and turns brownish to black (like a mummy). The line of separation is formed between the gangrenous part and the viable part of the tissue. The gangrenous part consists of inflammatory granulation tissue. It occurs mainly in diabetic patients or people suffering from arterial blood vessel diseases.
Answer: Air pollution occurs when harmful or excessive quantities of substances including gases, particulates, and biological molecules are introduced into Earth's atmosphere.
Explanation: Hope this helps!!!