Question

The lab procedure involves two trays of plants. Select all factors below that are the same (constant) for both trays. The remaining factors are the variables of the lab procedure.

amount of water given to the plants

growth of the plants

presence of worms in the soil

environment of the plants

the amount of sunlight given

Answer 1

Constants:
- amount of water given to the plants
- environment of the plants
- the amount of sunlight given

Variables:
- presence of worms in the soil (different between trays)
- growth of the plants (the measured outcome)