This is a 6 mark question, paper 6. Please plz help The average temperature of the human body is 37°C. Humans produce lipase for fat digestion. A student thought that lipase would work best at human body temperature. Plan an investigation to find out if 37°C is the optimum (best) temperature for lipase activity.

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

When plants use sunlight to make food, the energy of sunlight is