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Nowadays, natural disasters(灾害) happen from time to time around us, such as earthquakes, wildfires and typhoons.Here are some things about wildfire.
Wildfires are unexpected and unplanned.And the cause of most wildfires is unsure.To burn, wildfires require the right conditions — fuel, oxygen and heat.And global warming is one of the most important reasons.The high temperatures and dry conditions make the fire spread quickly.
In many parts of the world, wildfires happen naturally.They are started by lightning(闪电) or some other special weather conditions.In recent years, there have been more wildfires because of dry, hot weather, and changeable weather patterns.
However, many wildfires are started by people.Sometimes, people clear land for farming.Besides, there are smokers who accidentally set fires.
Wildfires can cause a lot of smoke, which will pollute the air.Lots of lives, property(财产) and valuable forests will soon disappear in wildfires.When trees are burnt down, and heavy rain follows, more disasters such as terrible floods will happen.
Wildfires ▲ ◆By nature: ●Global warming leads to and dry conditions. ●They are started by lighting or some other special weather conditions. ◆By people: ●People clear the land for . ●Smokers set fires by . ▲Influence ●Wildfires can cause a lot of air. ●Lives, property and valuable forests disappear. ●More disasters will happen. |