Multiple ChoiceWhy don't we run out of the important gases, such as oxygen and carbon dioxide, that are essential for life on Earth?34views
Multiple ChoiceWhich of the following statements about the properties of water as a universal solvent is true?342views
Multiple ChoiceWhich of the following correctly lists three places where fresh water is found on Earth?35views
Multiple ChoiceWhich property of water allows it to dissolve a wide variety of substances, making it known as the 'universal solvent'?492views
Multiple ChoiceWhich of the following best explains why humans need constant supplies of fresh water?65views
Multiple ChoiceWhich best explains why blood and the cytoplasm of cells are mainly composed of liquid water?29views
Multiple ChoiceWhich property of water allows it to be an effective transporter in organisms?357views