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Describe how the body responds when a decrease in core body temperature is detected. (6 marks)

When the core body temperature falls below the optimum, vasoconstriction occurs meaning blood flow to the vessels supplying the skin is reduced. This is beneficial as it reduces lost energy. The body also...

AW
Answered by Amy W. Biology tutor
20664 Views

In fractional distillation the shorter hydrocarbons have lower boiling points and distil off first. Why?

Boiling points are determined by the interactions between the individual hydrocarbon molecules. The weaker the interactions, the ...

HB
Answered by Hannah B. Chemistry tutor
6089 Views

Why do acids have low pHs and alkaline solutions have high pHs?

The pH scale is a measure of how many H+ ions...

HB
Answered by Hannah B. Chemistry tutor
4177 Views

Work out the shape of an SF6 molecule

To work out the shape of the SF6 molecule we can use a simple equation which allows us to work out the number of electron pairs. The equation is (old group + electrons donated +/- charge) / 2. If the char...

MW
Answered by Maciej W. Chemistry tutor
3508 Views

Describe one study into obedience

Milgram’s study in 1963 aimed to explore the idea of obedience to see whether people would blindly follow orders from an authority figure. He gathered 40 participants aged 20 to 50 who volunteered from an...

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6061 Views

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