Cobie is testing how the amount of fertilizer affects the height of plants. Which variable does NOT need to be controlled. * Athe amount of fertilizer
Bthe type of plants used
Cthe amount of water each plant gets
Dthe location of the plants

the answer is c a tornado

hi! do you know the answer for this flvs question?

what do anaerobic organisms have in common with photosynthetic organisms?

they both appeared on earth at about the same time.

they both can only exist as single-celled organisms.

they both need an energy source in order to survive.

they both produce carbon dioxide as a waste product.

i am in desperate need of !

unless you remeber everything you always have to have data when recording anything.