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'Strength is the most influential factor that affects primary and secondary hazards during an volcanic eruption'. To what extent do you agree. (more A-level)

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 also a...
JG
Answered by James G. • Geography tutor
2031 Views

Describe and explain the formation of an oxbow lake

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 outsides...
FK
Answered by Felix K. • Geography tutor
5148 Views

Explain how the use of fossil fuels and changes in agriculture may have contributed to global changes in temperature (4 marks)

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 in...
FK
Answered by Felix K. • Geography tutor
3680 Views

Are the severity of famines caused by human or physical factors?

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 mitigat...
DN
Answered by Dermot N. • Geography tutor
2132 Views

Explain how the increasing use of fossil fuels and changes in agriculture may have contributed to global changes in temperature.

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. Met...
KR
Answered by Kieran R. • Geography tutor
5176 Views