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

Explanation:

In a controlled experiment (like a plant lab procedure), constants are factors kept the same to ensure only the independent variable affects the dependent variable (plant growth here). The amount of water, presence of worms, environment, and sunlight are controlled (kept constant) so that any difference in plant growth (the variable) is due to the manipulated factor. Plant growth is the dependent variable (outcome), so it's not a constant.

Answer:

• amount of water given to the plants
• presence of worms in the soil
• environment of the plants
• the amount of sunlight given