Question

seaweed belongs to which of earths spheres?
○ atmosphere
○ biosphere
○ geosphere
○ hydrosphere

Explanation:

The biosphere encompasses all living organisms on Earth. Seaweed is a living organism. The atmosphere is the layer of gases around Earth. The geosphere refers to the solid parts of Earth. The hydrosphere is all the water on Earth. Since seaweed is alive, it fits in the biosphere.

Answer:

B. biosphere