As we learned in class on 2/12, one product of photosynthesis is oxygen. oxygen is very important to us and many life forms we know but before photosynthesizers evolved, oxygen was toxic to life. write 1 to 2 complete paragraphs answering the following questions. 1. what is the chemical formula of photosynthesis? how many molecules of each compound results? 2. for what specific reasons was photosynthesis harmful to life forms that existed when this chemical process evolved? 3. what evidence do we have that shows this occurrence? (there were several mentioned.)

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.