Someone help me with these two questions

Aproper cool-down routine includes which of the following? a). eating a good-sized meal b. five to 10 minutes of slow walking or jogging and stretching c). less than 5 minutes of cool-down stretches d). sprinting or other strenuous exercise

If human development really does proceed continuously, what value does stage theories of development have?

What is the total amount of waste dissolved in the plasma and what chemical is it