Mr. villa’s class does a science experiment. his students place three vases of cut flowers in the sunlight. they pour water into the first vase of flowers. they pour soda into the second vase of flowers. they pour vinegar into the third vase of flowers. at the end of one week the students observe that the flowers in the vase of water are still alive, but the flowers in the other two vases are dead.
what can the students infer from the observations in the experiment?
a)
flowers need light to grow.
b)
vinegar makes flowers bloom.
c)
plants need water to survive.
d)
plants prefer water to soda or vinegar.

What rules did the monroe doctrine set for the united states?

Hilard and clint are seeing a therapist for their sexual difficulties. their homework assignment this week is to caress each other while communicating what is pleasurable to each of them, and to avoid setting any performance goals. this is called the exercise.

Asociologist wants to study a culture that occurs in some women’s prisons: “state families,” in which individual prisoners take on certain roles within a group of like-minded prisoners. there is previous evidence that younger prisoners will use older inmates who play the roles of grandparents as a resource before they will turn to staff for and advice. the lieutenant in charge of a dorm of long-term prisoners offers to gather volunteers to speak to the researcher and also offers to vouch for the integrity of the researcher. the use of this staff is: a valid use of a statistical technique referred to “snowball sampling” wherein the inclusion of the first subject leads to the recruitment of another one subject.a useful tactic in obtaining a sample of prisoners who both meet the criteria and who will be honest with the researcher.wrong and is prohibited; subject selection needs to be free from intervention by prison authorities or prisoners.acceptable only when the researcher’s irb grants a special waiver.