Photosynthieis sry if spelled wrong
To test the effectiveness...
A. This variable should be controlled (the same in both groups).
B. The new chemical is what is being added to the experimental group.
C. This is the control group to which the treated couch should be compared.
D. This is the experimental group to which data should be taken.
Final answer: D
KINGDON,PHYLUM,CLASS,ORDER,FAMILY,GENUS,SPECIES
Quick energy,
energy storage
and add structure