Question

1. this diagram shows the carbon dioxide - oxygen cycle.

explain the cycle, the gases involved, how they are used, and how they move in the cycle.
a. plants in sunlight:
b. animals at any time:
c. plants at any time:

Explanation:

• a. Plants in sunlight:
• Plants use sunlight for photosynthesis.
• They take in \(CO_2\) (carbon dioxide) and \(H_2O\) (water).
• Produce \(O_2\) (oxygen) and food (glucose).
• b. Animals at any time:
• Animals take in \(O_2\) (oxygen) for respiration.
• Release \(CO_2\) (carbon dioxide) as a waste product.
• c. Plants at any time:
• Plants also respire (like animals).
• Take in \(O_2\) (oxygen) and release \(CO_2\) (carbon dioxide).

Answer:

a. Plants in sunlight: Use \(CO_2\) and \(H_2O\) with sunlight to make food and \(O_2\).
b. Animals at any time: Breathe in \(O_2\) and breathe out \(CO_2\).
c. Plants at any time: Respire, taking in \(O_2\) and releasing \(CO_2\).