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Explain what is meant by economic development and its components (5 marks)

Economic development refers to progress and development made to a country's economy and these are often characterised into 3 areas Resources- these get the process moving in the first place, these are natura...
AP
Answered by Arjan P. • Geography tutor
6417 Views

evaluate some different treatments for cardiovascular disease (6)

LIFESTYLE examples of lifestyle treatment Lower blood cholesterol by cutting down on fatty foods.Stop smoking and other recreational drugs - They can affect heart rate and blood pressure, increasing the risk...
MD
Answered by Melissa D. • Biology tutor
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How can the use of antibiotics contribute to bacteria becoming resistant?

Bacterial DNA can spontaneously mutate, which means a change in the nucleotide reading frame. By chance, a mutation may cause the bacteria to prevent being killed by the antibiotic. For example, by developin...
CW
Answered by Carolina W. • Biology tutor
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A ship is 180 kilometres away from a port P on a bearing of 63 degrees. Another ship is 245 kilometres away from port P on a bearing of 146 degrees. Calculate the distance between the two ships.

While this problem could be done simply by inputting the appropriate numbers into the correct formula, it is good practice to draw a diagram of the problem in order to minimise any silly mistakes that may be...
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Answered by Saeed G. • Maths tutor
8676 Views

What are the different types of bonding?

There are 3 main types of bonding: covalent, ionic and metallic. Covalent bonding occurs when there are a shared pair of electrons between two atoms. Ionic bonding is the electrostatic attraction between two...
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Answered by Rachel M. • Chemistry tutor
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