Sarah wants to know which brand of nail polish lasts the longest without chipping. She buys 4 types of nail polish - Essie (which she normally uses.) Butter, , and Sally HansenEvery Sunday for 4 weeks she paints her nails with a different brand of polish and records how many days she lasts before she gets her first chip. She makes sure to use the same bottom coat and top coat with each type of polish, and she makes sure to do the same weekly routine each week so that her nails aren't getting treated more roughly different weeks.

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.

What two conditions must be present for osmosis to occur?

Why is it bad that some cancer cells can make their own growth hormones?