Answer:
The correct answer is "They are used for photosynthesis".
Explanation:
Kelp is a type of seaweed that lives in underwater coastal zones under formations of multiple organisms known as "underwater forests". Autotrophic organisms such as kelp, use carbon dioxide (CO2) and oxygen (O2) to peform its photosynthesis processes. During photosynthesis, the organisms use CO2, water and sunlight to produce glucose, while O2 is also produced but as a byproduct.
Kelps are the large and long brown algae seaweeds. These kelps are found in the shallow ocean and are multicellular and macroscopic algae. The relationship between carbon dioxide and oxygen is kelps is that:
Algae are aquatic, photosynthetic, eukaryotic organisms. Algae can be unicellular or multicellular organisms, like kelps.
Kelps are multicellular algae, which perform photosynthesis to provide nourishment and release oxygen. Photosynthesis is the process of consuming carbon dioxide and water in the presence of sunlight to yield oxygen and synthesize sugar for energy.
Therefore, carbon dioxide and oxygen are used by the kelps to perform photosynthesis.
To know more about kelps and photosynthesis, refer to the following link:
https://brainly.com/question/14417641
