Question

1) What would happen to the amount of carbon dioxide in a closed terrarium if most of the plants were

removed?

2) What would happen to the amount of carbon dioxide in a closed terrarium if the number of grasshoppers doubled?

3) What would happen to the amount of oxygen in an aquarium if more fish were added?

Answer 1

1) The amount of carbon dioxide in a closed terrarium would increase if most of the plants were removed.
2) The amount of carbon dioxide in a closed terrarium would increase if the number of grasshoppers doubled.
3) The amount of oxygen in an aquarium would decrease if more fish were added.