Be aware of mudflows. the danger from a mudflow increases near stream channels and with prolonged heavy rains. mudflows can move faster than you can walk or run. look upstream before crossing a bridge and do not cross the bridge if a mudflow is approaching

The mudflows are very dangerous and they have a great destructive power. They appear after a heavy rainfall on places that are steep. The mudflows are very fast and sudden occurrences, so usually people are caught unprepared. A mudflow is a mixture of water and lot of ground/mud, and all sorts of debris, which also contributes to it to be more dangerous.

air, water, heat and noise pollution can all be caused by producing and using technology. consuming resources - non-renewable resources, including precious metals like gold, are used to make technology

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

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