2. Chlorine free radicals are produced in the upper atmosphere when ultraviolet radiation interacts
with chlorofluorocarbons (CFCs). The free radicals catalyze the conversion of ozone to oxygen. How is
this catalysis harmful to humans?

Gymnast always perform on padded mats. how does the mats protect the gymnast

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Part 1: include important facts found through your research. part 2: include your visual display. include your summary of “the chemistry of water” from the national science foundation website. include your experiment. part 3: include responses to the reflection questions.