Bio:

The "Plants and Snails" Gizmo answer key provides responses to questions in the Gizmo simulation that explores the relationship between photosynthesis, respiration, and the carbon/oxygen cycle using plants and snails in a closed environment. In the activity, students observe how light, darkness, and the presence of snails or plants affect oxygen and carbon dioxide levels. Key answers generally show that plants produce oxygen during photosynthesis in the light and use oxygen during respiration in the dark, while snails always consume oxygen and produce carbon dioxide. The simulation demonstrates how plants and animals maintain gas balance in an ecosystem.