Which of the relations represented below are functions?

Which one of the following taxonomic groups contains the greatest number of organisms?

THE ITEM is based on the following extract.

Unemployment and hard economic conditions have forced both parents in some Caribbean families to migrate, leaving an elder son or daughter to care for the younger brothers and sisters.

Which of the following problem is LEAST likely to affect the younger brothers and sisters?

When aluminium is extracted by electrolysis, cryolite is added to:

Which one of the following best compares the eye and a camera?

If x = 3² × 2³, then x⁴ =

The chemicals that make up the bodies of animals and plants are called:

Single-celled organisms do not need a transport system because:

In the Venn diagram above, the shaded portion represents

Which one of these statements is true for ALL electromagnetic waves?

Which of the following are all secondary sex characteristics in females?

The following statements describe an ordinary mercury-in-glass laboratory thermometer. Which one of them is NOT true?

In metals, the particles forming the structure are all:

Particles are furthest apart in:

When an acid neutralises an alkali the pH is likely to be:

If x = 2 and y = -1, then 3x - 5y / xy²

Which of the following entries should be used to post Sales return?

A ripple travels over the surface of some water. Its wavelength is 2 m, its amplitude is 0.1 m and its frequency is 0.5 Hz.The speed of the ripple is:

The non-metal used to make margarine is:

A and B had a partnership and shared profits and losses 2/3 and 1/3 respectively. They admitted C to the partnership. In addition to capital, C had to pay goodwill $3,600. How much did A and B receive as their respective share of Goodwill?