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List four pull factors that attract people to urban areas in Low Income Countries.

Population from low-income countries tends to migrate to high-income countries because of different factors: -They offer a better lifestyle. -They offer better studies also, it is where you can easily seek h...
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Answered by Marie H. • Geography tutor
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A white substance is placed on the table in front of you, explain what methods/techniques you could use to determine what compound the substance is

Melting point, NMR, Mass spectrometry, IR spectroscopy
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Answered by Gavin I. • Chemistry tutor
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Draw the chemical structures of butane, butene and butyne.

I would then go through with the student and explain that an alkane is a hydrocarbon made up of single carbon-carbon bonds only. This is why butane ends in -ane, it begins with but- due to the number of carb...
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Answered by Gavin I. • Chemistry tutor
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Discuss the bonds which comprise the tertiary structure of protein.

Bonds in a protein's tertiary structure occur entirely between the highly variable R-groups of the amino acyl residues. Firstly, hydrogen bonds further to those in the secondary structure may form between th...
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Answered by Jamie B. • Biology tutor
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12 + 37 + 47

12 + 37 + 47 = (10 + 30 + 40) + (2 + 7 + 7) = 80 + 16 = 96 It is important to visualize well the operation, being able to separate and put together the numbers that are easy to calculate together. This makes...
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Answered by Marie H. • Maths tutor
3644 Views