Comma Practice (STAAR Style)

• And because most plastic bags are made of polyethylene, a product derived from crude oil or natural gas, they waste nonrenewable resources.

• And most plastic bags are made of polyethylene, a product derived from crude oil or natural gas, they waste nonrenewable resources.

• And most plastic bags, which are made of polyethylene derived from crude oil or natural gas, wasting nonrenewable resources.

• The sentences are written correctly in the paper.

• He was baffled by the idea of discarding perfectly good soap, Kayongo asked the hotel for an explanation.

• While baffled by the idea of discarding perfectly good soap. Kayongo asked the hotel for an explanation.

• Baffled by the idea of discarding perfectly good soap, Kayongo asked the hotel for an explanation.

• The sentences are written correctly in the paper.

• Although Uganda is recovering from years of war, the nation is still plagued by poverty. With many workers earning no more than a dollar a day.

• Although Uganda is recovering from years of war. The nation is still plagued by poverty, and many workers earn no more than a dollar a day.

• Although Uganda is recovering from years of war, the nation is still plagued by poverty. Many workers earn no more than a dollar a day.

• The sentence is written correctly in the paper.

• As I watched friends find dates for homecoming, I was initially a little discouraged. Because it looked as though my first homecoming dance would be missing a key character.

• As I watched friends find dates for homecoming, I was initially a little discouraged. It looked as though my first homecoming dance would be missing a key character.

• As I watched friends find dates for homecoming. I was initially a little discouraged because it looked as though my first homecoming dance would be missing a key character.

• Sentence 4 is written correctly.

• It had been over a period of six months, the turbine produced up to 211 gallons of water per day.

• Because it had been over a period of six months, the turbine produced up to 211 gallons of water per day.

• Over a period of six months, the turbine produced up to 211 gallons of water per day.

• The turbine produced up to 211 gallons of water per day, this was over a period of six months.

• It's easy to snap a photo, load it on a website, and type out a quick synopsis of where they are and what they're doing.

• It's easy to snap a photo and load it on a website, then a quick synopsis is typed out of where they are and what they're doing.

• It's easy to snap a photo that loads it on a website to type a synopsis of where they are and what they're doing.

• No revision is needed in this sentence.

• Amy Cuddy did a study on how "power poses" affect people she is a social psychologist at Harvard University.

• Amy Cuddy did a study on how "power poses" affect people, a social psychologist at Harvard University.

• Amy Cuddy, a social psychologist at Harvard University, did a study on how "power poses" affect people.

• Amy Cuddy did a study, at Harvard University and with a social psychologist, on how "power poses" affect people.