OpenStudy (anonymous):
help!
OpenStudy (anonymous):
A school principal wants to observe how the natural circulation of air has an effect on classroom learning. The principal randomly chooses a group of students of the same age and grade, and places them in a room with open windows. The test scores of the class are recorded and analyzed at the end of the semester. How could this observation be changed into a valid experiment of the effects of air circulation? A. by adding an identical classroom that has adjustable windows B. by adding an identical classroom and opening the doors of both classrooms C. by adding an identical classroom and allowing students to use electric fans in it
OpenStudy (anonymous):
@dumbcow can you help
OpenStudy (anonymous):
By adding an identical classroom that has adjustable windows. This answer can vary pinding on apex.
Join our real-time social learning platform and learn together with your friends!
lovelove1700:
u00bfA quu00e9 hora es tu clase?Fill in the blanks Activity unlimited attempts left Completa.
glomore600:
find someone says that that one person your talking to doesn't really like you should I take their advice and leave or should I ask the person i'm talking t
Addif9911:
Him I dimmed the light that once felt mine, a glow I never meant to lose. I over-read the shadows, let voices crowd the room where only two hearts shouldu20
EdwinJsHispanic:
Poem to my mom who proved my point "You proved my point, I am a failure. but I kinda wish, you were my savior.
Wolfwoods:
The Modern Princess "you spoke so softly to me, held me close when no one else did, loved me in a way no one else dared to.
Wolfwoods:
The Pain Of Waiting "The short story would be that we fell in love, you left and I continued to wait for you.
notmeta:
balance the following equation - alumoinum chlorate --> alumninum chloride + oxyg