What are the stairs of dna ladder made of

True or false. bulimia can begin with a weight-loss diet.

90% of people marry there 7th grade love. since u have read this, u will be told good news 2night. if u don't pass this on nine comments ur worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of ur life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love u

Which of the following is a lifestyle behavior? a. getting enough sleep b. exercise c. tobacco use d. all of the above