Which animal group lacks a backbone and includes insects worms and molluscs?

Which animal group is characterised by having a backbone or vertebral column?

Which type of animal can live both on land and in water, such as frogs and toads?

Which type of joint is found in the skull where bones are fixed together and allow no movement?

Which cold-blooded animal group is covered in scales breathes air through lungs and lays eggs on land?

Which everyday substance when mixed with water forms a solution that conducts electricity?

Which warm-blooded animal group nourishes its young with milk and typically gives birth to live young?

Which phenomenon explains why distant mountains sometimes appear bluish in colour?

Which cold-blooded vertebrate group lives entirely in water breathing through gills throughout its life?

Which everyday process involves the removal of dissolved impurities from water by passing it through a bed of sand and gravel?

Which common everyday substance is used to test for the presence of starch in food by turning blue-black?