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Strength is a considerable factor, it affects the how severe primary affects will be, these can include pyroclastic flows, ash fall tephra, lava bombs and ground shaking. Increased ash fall tephra can als...

Oxbow lakes are often found in the middle course of a river where the discharge is high. Firstly, a meander will begin to form. On the inside of the bends (convex banks) deposition occurs and on the outsi...

When fossil fuels are burnt, they release carbon dioxide. Carbon dioxide is a greenhouse gas which traps incoming radiation from the sun. This radiation causes the atmosphere to heat up and thus we see an...

Physical factors such as changes in the El Nino weather cycle can cause famines as changes in the cycle can cause droughts in sub-saharan Africa or Southern Asia. However these droughts can be either miti...

The burning of fossil fuels releases CO2 into the atmosphere. This CO2 adds to the greenhouse effect as it blocks more heat from leaving the atmosphere, therefore increasing the temperature of the earth. ...