which of earth's spheres extends into all others
The biosphere is the Earth's sphere that extends into all others. The biosphere includes all living organisms on Earth, including plants, animals, and microorganisms, as well as the environments in which they live. The biosphere interacts with and depends on other spheres, such as the atmosphere, hydrosphere, and geosphere.
To arrive at this answer, we can break down the Earth's spheres and determine which one encompasses the others:
1. Atmosphere: The layer of gases that surround the Earth. While it extends into the other spheres to some extent, it doesn't fully encompass them.
2. Hydrosphere: Comprises all of Earth's water, including oceans, lakes, rivers, groundwater, and even atmospheric water vapor. It also interacts with other spheres, but it is not found within all other spheres.
3. Geosphere: The solid Earth, including the rocks, minerals, and landforms. It does not extend into the other spheres but is influenced by them.
4. Biosphere: The layer of Earth that contains all living organisms and their habitats. It exists within and interacts with all other spheres due to the interconnectedness of life with the atmosphere, hydrosphere, and geosphere.
Therefore, the biosphere is the sphere that extends into all others.