The answer would be B.) they can never be depleted. Renewable resources are resources that are, unlike nonrenewable resources (i.e coal, oil, any other fossil fuels, etc.) cannot run out. Examples include sunlight, wind, and water (water never really runs out due to the water cycle).
Answer:
Hypothesis: If plants do not get enough water, then they will not grow.
Indpendent Variable: amount of water.
Dependent variable: height/growth of plant
Constants:
- same amount of sun
- same plant
- same amount of shade
- same pot
- same soil
- same water
- same temperature
Explanation:
Hope that this was the type of example that you're looking for, just a simple experiment that is a good way to show how the scientific method works. Good luck!
I might be wrong but my choices that I choose are:
Evaporation, resperation, and elimination.
Vitamin D, helps build bones and keep bones strong and healthy.