The correct answer is acid rain.
Acid rain - characterized as containing harmful levels of sulfur dioxide or nitrogen oxide; acid rain is damaging and potentially deadly to the earth's fragile ecosystems; acidity is measured using the pH scale where 7 is neutral, values greater than 7 are considered alkaline, and values below 5.6 are considered acid precipitation; note - a pH of 2.4 (the acidity of vinegar) has been measured in rainfall in New England.
<em>CIA World Factbook Notes and Definitions
</em>
<em>
</em>
<em>CIA World Factbook</em>
Answer:
1. How to change brake pads on different types of cars.
2. Smoking and Drinking are bad habits.
3. How to sew holes in your favorite clothes.
Explanation:
Some reasons why mount everest is so difficult to climb are that there is not much oxygen up there and many other people visit the mountain. Another reason is ice can fall down the mountain and hit a climber.
(look up 360 expeditions for your website)
