What is the ideal length of time for cool down following intense workout

Water pollution cannot only affect the earth's water supply but it can also affect the soil true or false

Religion can people engage in healthier behavior but in the meanwhile it can also harm health. true or false

There is only one copy machine at your office. you have to make 1000 copies of an expense report. after you begin copying, two other employees show up in the copy room. each has to make only 10 copies each. what is the proper etiquette in this situation?