Biology, 23.09.2019 22:00, stormserena
Norman thinks that the brain function of students suffers when they receive less sleep. he predicts that students who get less sleep before an exam will receive lower test grades. to investigate his idea, he tests two groups of chemistry students. group 1 receives four hours of sleep, while group 2 receives the recommended eight hours of sleep the night before the exam. both groups consume the same foods before testing and take the same exam in the same room. the room has a constant temperature and level of light for all students. what is the independent variable in norman's investigation?
Answers: 1
Biology, 21.06.2019 12:30, Clervoyantyvonne
In which direction is the pacific plate moving in relation to the north american plate?
Answers: 1
Biology, 21.06.2019 22:30, ladnerhailey16
Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials
Answers: 2
Biology, 22.06.2019 06:10, HOTaco1837
You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13
Answers: 2
Norman thinks that the brain function of students suffers when they receive less sleep. he predicts...
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