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Respiration uses 'food' in the form of glucose with oxygen to store (never create) energy in the form of ATP, along with CO2 and H2O. Photosynthesis uses energy from light with CO2 and H2O to create/store...

If 168 is four sevenths of a number then divide this by 4 to give 1 seventh of the number.
168/4 = 42
So 42 is one seventh of the number.
Now multiply this by 7 to find the number.
42*...

When finding the gradient of a line we need to first locate any two points, on the line, where we know the x-coordinates and we know the y-coordinates. Now, with these two coordinates we need to find two ...

Chlorine is in Group 7 of the periodic table. Therefore a chlorine atom has 7 electrons in its outer shell. this atom needs one more electron to form an ion with a full outer shell. Hence the ion formed w...

Louis Pasteur showed that airborne microbes were the cause of disease, where previously people had blamed superstition. He built on the work of Edward Jenner, who discovered the smallpox vaccine, and help...