If there are more greenhouse gases in the atmosphere, more ultraviolet radiation will be trapped and the Earth will heat up.  Having read the above passage, choose the right answer to the following question (choices are Tony or Evan ):   Tony drives an SUV that contributes many greenhouse gases to the atmosphere. Evan rides a scooter that contributes few greenhouses gases to the atmosphere. Who likely contributes less to the Earth heating up Tony or Evan?
The answer to this question is:
Evan