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

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

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

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

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

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

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

Which property of a magnet means it will always realign itself to point in a north-south direction if freely suspended?

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

Which common acid is found in citrus fruits like lemons and oranges giving them a sour taste?

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