Question

1. what gas is the film mainly talking about?a. oxygenb. carbon dioxide (co₂)c. nitrogen2. co₂ and ____________ are continually exchanged between the atmosphere and ocean.

Explanation:

1. The option is marked as correct in the provided image.
2. In ocean-atmosphere gas exchange, carbon dioxide and oxygen are the primary gases that are continuously exchanged between the two systems, driven by biological and physical processes.

Answer:

1. B. Carbon dioxide (CO₂)
2. Oxygen (O₂)