Question

Seaweed belongs to which of Earth’s spheres?

Answer 1

Seaweed primarily belongs to the **biosphere**, which is the sphere that includes all living organisms on Earth. It is also found in the **hydrosphere**, as it grows in marine and freshwater environments. Thus, while seaweed is primarily part of the biosphere, it interacts with both the hydrosphere and can also have implications for the atmosphere through processes like photosynthesis and carbon absorption.