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Describe the potential effects, on people, of unprotected exposure to the sun. give an example of 1 new thing have you learned about the sun’s uv rays.

The consists of a mixture of gases and particles, including oxygen, nitrogen, hydrogen, carbon dioxide, water vapor, and dust.

What is difference between an epidemic and a pandemic? a) an epidemic is a disease; a pandemic is a treatment. b) an epidemic is restricted to a local region; a pandemic is global. c) an epidemic has low mortality; a pandemic has higher mortality. d) an epidemic is caused by a bacterial infection; a pandemic is caused by a viral infection.