Which one of the following factors does NOT affect the rate of transpiration?

In a box, there are 3 white, 4 red and 2 blue marbles. What is the probability that a marble taken at random is NOT blue?

The major plant nutrients written as NPK refer to phosphorus, nitrogen and:

In a plant cell, turgor is caused by:

Each of the features of our bodies is controlled by a:

When zinc metal is added to copper sulphate solution the products are copper and zinc sulphate solution, so the material that has been displaced must be:

The active catalyst in a car′s catalytic converter is:

The point where two neurones connect is called:

The catalyst in the Haber Process is:

The number of carbon atoms in the alcohol, pentanol, is:

The wall of the heart is made of:

Asexual reproduction produces:

A lack of vitamin D in the diet causes:

Water is lost from the body in:

If x is an odd number, which of the following is also odd?

Hydrocarbons contain carbon and:

The following statements describe a magnetic field plot, showing the lines of force.Which one is true?

Transpiration is:

Identify the order in which the ancestors of the Caribbean people arrived in the region.

1. Amerindians
2. East Indians
3. Europeans
4. Africans

Which one of the following gases is considerably heavier than air?