Question

1. refer to the graph of your data for o₂. describe what else was happening when the plants were exposed to light. the amount of oxygen in the atmosphere was increasing. the amount of oxygen in the atmosphere was decreasing. the amount of nitrogen in the atmosphere was decreasing. the amount of water in the atmosphere was increasing. submit answer 0 / ∞ submissions used score: 0/1

Explanation:

When plants are exposed to light, they perform photosynthesis. During photosynthesis, plants take in carbon dioxide and water and produce glucose and oxygen. So, the amount of oxygen in the atmosphere would increase. Looking at the graph, the \(O_2\) level (percentage) is rising over time. The other options can be ruled out: nitrogen is not directly affected by plant photosynthesis in this context (it's a major component of the atmosphere but not a direct product or reactant in the simple photosynthesis - related process shown here), and there's no indication of water increase (the graph is about \(O_2\)) and the \(O_2\) level is increasing not decreasing.

Answer:

The amount of oxygen in the atmosphere was increasing.