Young people are critical to the success of a political campaign because they . A. can only work during spring break B. bring little excitement and passion C. have time and energy to give to the campaign D. must gain experience after they graduate from college Please select the best answer from the choices provided

Without stratospheric ozone, which of the following would most likely occur? i. smog over major cities would be greatly reduced. ii. farms would produce surplus crops because of increased photosynthesis. iii. uv radiation would damage phytoplankton and reduce populations of aquatic consumers. i only ii only iii only i and ii i and iii