Answer:
27.) Temperature
28.) Rate of Photosynthesis
29.) Rate of Photosynthesis vs. Temperature (°C)
30.) The rate of photosynthesis works optimally at around 25°C.
31.) Caffeine
32.) Mouse wheel revolution
33.) Population B: mice with extra 0.5mL of water
34.) a.) Food, b.) temperature c.) time on wheel (I think the teacher is hinting at water, but population B is given 0.5mL more water.)
35.) If we give mice caffeine, then the mice will run faster because caffeine releases adrenaline.
Explanation:
27.) Independent variables are usually the x-axis, thus it is temperature
28.) Dependent variables are usually the y-axis, thus it is rate of photosynthesis
29.) Easiest way to name graph is y-axis variable v. x-axis variable.
30.) Look at the graph
31.) Only difference is caffeine, thus independent variable is caffeine
32.) They want to see how caffeine affects the speed of the mice, thus the dependent variable is the mouse wheel revolution
33.) The control group are the mice not given the 0.5mL of caffeine.
34.) They said "populations were given the same amount of water, fed identical amount of food, room temperature kept at 24°C." Though I would argue that water is not the same since one group is given more water.
35.) Read answer.
