Maia says that both lines on this position vs time graph

show acceleration. Is she correct? Why or why not?

Which of the following is a correct example of global warming creating a positive feedback?

The energy for nearly every organism in nearly every ecosystem ultimately comes from _____.

a. minerals in the soil
b. the sun
c. heat from Earth
d. respiration
e. decomposition

Science Grade 9:

Mr. Zajac wants to conduct an experiment to see if Red Bull energy drink makes plants grow faster. He takes plant #1 and puts it on a ledge that gets lots of sunshine. He waters this plant with 100 mL of water everyday. He takes plant #2, puts it on the ledge beside plant #1, and pours 100 mL of Red Bull on it twice a day, once when he wakes up, and once before he goes to bed. (3 marks)

a. Is this a fair test? Explain why or why not. (2 marks)

b. What would you recommend to Mr. Zajac to fix his experiment?