What are causes of floods and droughts?

What is a fire extinguisher with a red band or triangle? What is the difference between crisis and crises? When do you get paid for putting out chernobyl? What is a dry stand pipe? How do you get a smoke detector to stop chirping? What is DreamBox? What should be done after a nuclear disaster has occurred? Does fire extinguisher dust cause pneumonia? What is a non example of the word epidemic? What were the short and long term effects of the wahine disaster? Why is chernobyl dangerous to visit? What are the effects of flooding in London? When and where do floods occur? Does hugging a toilet keep you safe from a tornado? On a fire extinguisher which symbol represents combustible metals or class D fuels? What are science precautions for heat safety? When did the last tornado in Illinois occur? How do you protect yourself from a lightning storm? Do you need guns to protect yourself? What does the acronym 'FEMA' actually stand for?