Which of the following properties of water is not important to the survival of living things?

In the eye, rays of light are focussed on the retina by being refracted at:

Breathing in fish involves which two processes?

Absolute zero is:

Which of the following nutrients is/are digested in the stomach?

Some foods contain flavour enhancers. These food additives:

Photosynthesis is important because:

Why is testing a leaf for starch a reliable indication that photosynthesis has taken place?

Which of the following are all deficiency diseases?

The blood cells that engulf invading microorganisms are:

The density of seawater is:

Which of the following statements about anaerobic respiration is true?

The particles in a liquid:

The point where two neurones connect is called:

Overfishing means:

Transpiration is:

When carbon dioxide gas passes through limewater, the limewater:

Many leaves are adapted to photosynthesise effectively by having:

We do not see an object if rays of light from it are focussed on the blind spot because:

All gas exchange surfaces in vertebrate animals have:

Atherosclerosis is a process in which:

Excretion is best defined as:

Demersals are fish that are found:

Some plants reproduce by forming bulbs. The new plants that grow from the bulbs will be genetically identical
because:

Which statement is not true of sperm and ova?

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

Sea breezes result because:

When we sweat, we lose heat because:

The wall of the heart is made of:

Water reabsorption is controlled by:

Urea is made from surplus proteins in:

Three factors that increase the risk of coronary heart disease are:

Which one of the following is correct. When we digest our food:

Which one of the following comparisons of inhaled and exhaled air is correct?

Measuring plant growth by measuring height is convenient, but inaccurate because:

Hormonal methods of contraception work by:

During adolescence, boys:

Which of the following can cross the placenta from mother to fetus?

When we are too hot, more blood flows through the capillaries near the surface of the skin. This helps us to cool down because the blood loses heat by:

When focussing on distant objects: