Where exactly does gaseous exchange take place?

What liquid can be used to test for the presence of carbon dioxide?

Label the gases that are used in gaseous exchange.

What is the name given to the opening of the respiratory and digestive systems?

How many pairs of ribs does the average person have?

Nitrogen makes up how much of the air around us?

What substance is used to test for the presence of starch?

The main function of what organ is to absorb water into the blood?

What name is given to the wave-like motion that moves food through the oesophagus?

What particle in the atom has a negative charge?

Which of these is NOT a characteristic of metals?

What name is given to a celestial object that are natural satellites orbiting a planet?

Bread mould is a member of which kingdom?

What will a species experience if it does not adapt to a change in its environment?