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:

The workplace should be:

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

The blood cells that engulf invading microorganisms are:

Veins have valves because

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

Which one of the following lists only differences between aerobic respiration and anaerobic respiration?

Some foods contain flavour enhancers. These food additives:

When focussing on distant objects:

Atherosclerosis is a process in which:

A person of blood group AB has:

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?

Demersals are fish that are found:

Tooth decay can be caused by:

The point where two neurones connect is called:

Many leaves are adapted to photosynthesise effectively by having:

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

Sea breezes result because: