Question 1
Which of the following are affected by the loss of ozone?
◦ crop yields
◦ phytoplankton populations
◦ immune systems
◦ eye tissues
◦ all of these
Question 2
Which of the following characterizes Earth's
revolution?
◦ It takes approximately 24 hours.
◦ It is responsible for creating the circle of illumination, and hence, day/night relationships.
◦ It is clockwise when viewed from above the North Pole.
◦ It determines the timing of seasons and length of the year.