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What is palaeomagnetism?

Palaeomagnetism is a record of the Earth’s past magnetic field. When lava is erupted at the surface, magnetic minerals, such as iron, in the lava align parallel with the Earth’s magnetic field. The magnetic ...
LA
Answered by Lucy A. • Geology tutor
19290 Views

1 a) Please label the following diagram of the respiratory system. b) Describe the role of the diaphragm in the mechanism of breathing.

1 a) Trachea, bronchi, bronchioles, alveoli,diaphragm b) It is a muscle important in the function of respiration On inhalation, the diaphragm CONTRACTS and FLATTENS. Air is drawn INTO the lungs (INCREASE in ...
LB
Answered by Lauraa B. • Biology tutor
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Describe how the hormone glucagon helps a healthy individual to maintain their blood glucose concentration correctly.

When an individual's blood glucose concentration rises above the normal range (approximately 70-100mmol/100cm^3), alpha cells in the Islets of Langerhans in the pancreas detect this change and release glucag...
TD
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Describe how the Cold War was renewed by President Reagan of the United States in the 1980s.

United States President Ronald Reagan renewed the Cold War in the early 1980's by regularly using strong anti-communist rhetoric, labelling the Soviet Union an 'Evil Empire' and significantly increasing mili...
HS
Answered by Harry S. • History tutor
10059 Views

What role does sight play in ‘King Lear’?

The theme of sight and seeing in ‘King Lear’ is very prevalent. Both Lear and Gloucester demonstrate an inability to see their children for who they really are, which plays a great part in their demise. They...
RD
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