AP BIOLOGY

Detailed explanation-1: -Given that seaweed is a plant and therefore is alive, we can infer that seaweed belongs to the Earth’s biosphere. The Earth’s systems are grouped into spheres according to their contents.

Detailed explanation-2: -Seaweeds represent the least compromised, least exploited components of the biosphere, and retain much of their functionality.

Detailed explanation-3: -The biosphere is made up of living things and the areas of Earth where they are found. Seaweed and fish in the ocean are part of the Biosphere.

Detailed explanation-4: -The solid surface layer of Earth is the lithosphere. The atmosphere is the layer of air that stretches above the lithosphere. The Earth’s water-on the surface, in the ground, and in the air-makes up the hydrosphere. Since life exists on the ground, in the air, and in the water, the biosphere overlaps all these spheres.

Detailed explanation-5: -All the spheres interact with other spheres. For example, rain (hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and rivers that provide drinking water for wildlife and humans as well as water for plant growth (biosphere).