Sunlight's Impact: Increasing Energy Storage and Carbon Reduction in an Aquarium

Lily has an aquarium with water, plants, and fish that eat the plants. the aquarium is sealed so no material can get in or out, and has glass sides that allow light to come in. 

The aquarium can also be covered to prevent light from entering. the number of energy storage molecules in the plants and fish started out low, but that number has been increasing over time. 

I: Has the aquarium been in sunlight or has it been covered during this time? 

II: What has happened to the carbon in the water?

Possible Responses

I: Has the aquarium been in sunlight or has it been covered during this time? 

I: The answer to the first question is that the aquarium has been in sunlight during this time. This conclusion is drawn based on the information provided, including the fact that the aquarium has glass sides that allow light to come in. 

II: The answer to the second question is that the carbon in the water has been reduced. 

This deduction is based on the fact that the number of energy storage molecules in plants and fish has been increasing over time. 

In order for the energy storage molecules to increase, the plants must have been photosynthesizing, which involves absorbing carbon dioxide from the water and converting it into energy-rich molecules like glucose. 

Therefore, as the carbon dioxide is used by the plants, the overall amount of carbon in the water decreases.