Ultraviolet radiation is harmful O because itcauses unchecked photosynthesis. O damages DNA and protein.
O penetrates the aphotic zone.
O none of the above

4. discuss additional factors that some planets have that affect their seasons. 5. what fact about other planet’s seasons most surprised you and what did you find the most interesting? why?

Which direction does the energy flow in this energy pyramid ?

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased