[ 287 ] Life Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Experiment: Does fertilizer A help plants grow faster than fertilizer B? Process: First, identify what variables will be tested and what variables should be controlled. Fertilizers A and B should be applied to the same type of plant. This makes the type of plant one of your controls. Should all the plants be fertilized? Experiment: Does fertilizer A help plants grow faster than fertilizer B? Process: First, identify what variables will be tested and what variables should be controlled. Fertilizers A and B should be applied to the same type of plant. This makes the type of plant one of your controls. Should one plant get more sunlight or water or be exposed to different temperatures for different times than the other experimental plant? Experiment: Does fertilizer A help plants grow faster than fertilizer B? Process: First, identify what variables will be tested and what variables should be controlled. Fertilizers A and B should be applied to the same type of plant. This makes the type of plant one of your controls. The amount of fertilizer being applied ___________. • should be the same • can be different