Lightning and volcanic eruptions(火山爆发) can cause wildfires. However, 90 % of wildfires are caused by people. According to the US National Park Service, burning campfires and garbage debris(碎片), cigarette butts and acts of arson(纵火) can easily cause wildfires. ...
Our modern lifestyle has led to dirtier air over the years. Factories, all kinds of vehicles, the growing number of people are the things that \ responsible for air pollution today. But not all pollution is caused \ people. Smog, forest fires, dust storms and volcanic eruptions can also ...
Plains are land forms that are relatively flat or gently rolling, sometimes extensively for several miles. A plateau is simply an elevated plain. Plains are formed during volcanic eruptions, when lava flows for a considerable distance before it eventually solidifies. Other plains are formed from t...