What do you think would happen if you threw a block of polystyrene into the water?

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

What is the meaning of endocytosis ?

You have trained year for a marathon. in your first attempt to run a marathon, you decide that you want to complete this 26-mile race in 4-5 hours. a. what is the length of a marathon in kilometers (1mile= 1.6 kilometers). b. what would your average speed have to be to complete the race 4.5 hours? give your answer in kilometers per hour.