In the following pie chart, which of the following represents the amount of earth's surface water that is not located in the oceans?

a) a only
b) a and b
c) a, b, and c
d) d only

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution

The importance of the mind as a part of the body is an example of: