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A greenhouse gas is one which absorbs infrared radiation from the Earth and re-radiates it, increasing the surface temperature of the Earth. Normally these molecules are non-symmetrical such as triflur...

 Allicin has antimicrobial properties and can therefore protect garlic from fungal and bacterial infections and is coded for in the DNA of the garlic by an allele.

The photoelectric effect describes the process by which surface electrons are emitted from a metal when light is shined on it. This occurs because the electrons are able to absorb the electromagnetic e...

Used for right angled triangles where c is the hypothenuse and a and b are the two other sides.

Equation: a² + b² = c²

Label the sides of th...

To solve the equation means to make x the subject i.e. to make x on its own. Therefore, we need to add 6. If you add 6 to one side you must also add 6 to the other side. 

x-6+6 = 15+6