Suppose you are walking home after school. The distance from your home to school is 5 km. On foot, you can get home in ½ hour. However, if you rode a bike, you could get home in ¼ hour. What is your average speed on foot? What is your average speed on the bike? Show your work for each problem.

Which of the following is most likely the result of an organism having lipids in its body a) water cannot be absorbed through the surface of a leaf b)human eats fruits to get a quick source of energy c) a sheep sleeps for more hours in the winter d) a warm river is filled with fish and algae