Answer:clear mucus
explanation: straight from chapter 24 asepsis and infection control
1000 years ago people started cropping plants and they were spreading slowly
Answer:
True
Explanation:
I dont't know if this is a question but it is true.
Answer:
a) reactions to the comedy skit.
Explanation:
The independent variable is what researchers are observing, it is called independent because researchers do not know how it will react to the conditions it is exposed, in this case, the comedy skit after a regular night’s sleep and after a sleepless night.
Answers b and c have nothing to do with the current experiment.
Answer d could be right but sense of humour will be the final conclusion of the study. First, researchers will observe students´reactions (independent variable) which will lead to a more general conclusion; sense of humor affected by the amount of sleep.