Multiple ChoiceWhy don't we run out of the important gases, such as oxygen and carbon dioxide, that are essential for life on Earth?45views
Multiple ChoiceWhich of the following statements about the properties of water as a universal solvent is true?370views
Multiple ChoiceWhich of the following correctly lists three places where fresh water is found on Earth?47views
Multiple ChoiceWhich property of water allows it to dissolve a wide variety of substances, making it known as the 'universal solvent'?529views
Multiple ChoiceWhich of the following best explains why humans need constant supplies of fresh water?75views
Multiple ChoiceWhich best explains why blood and the cytoplasm of cells are mainly composed of liquid water?43views
Multiple ChoiceWhich property of water allows it to be an effective transporter in organisms?385views