Question

Which of the following is NOT a segment of the environment?

• A. Lithosphere
• B. Hydrosphere
• C. Atmosphere
• D. Biosensor

Hint:

Logic Tip: The prefix tells the story: "Atmo" = air, "Hydro" = water, "Litho" = stone. They all end in "sphere" (meaning a globe/domain). A "sensor" is a little electronic gadget, clearly not part of the Earth's structural anatomy.

Answer 1

The Correct Option is D

Concept:
The Earth's environment is scientifically categorized into four distinct, interacting physical spheres or segments.

Step 1: This is the gaseous envelope surrounding the Earth (the air). It is a primary segment.

Step 2: This encompasses all the water on Earth, including oceans, rivers, lakes, and groundwater. It is a primary segment.

Step 3: This is the solid, rigid outer part of the Earth, including the crust and upper mantle (rocks, soil, mountains). It is a primary segment.

Step 4: The fourth true segment is the Biosphere, which represents the zone where all living organisms exist.

Step 5: A "Biosensor" is a man-made analytical device used to detect chemical substances (like a blood glucose monitor). It is a piece of technology, not a massive global environmental segment.