Biosphere — Science definition
Living organisms and their biological relationships within Earth’s systems.
Where it is taught
- Earth’s Spheres & System Interactions — Earth Systems, Plates & Earth Materials, Science 6: Matter, Energy & Earth Systems, Grade 6
In use
The four systems are the geosphere, the rock and metal of the solid Earth; the hydrosphere, all of its water; the atmosphere, the envelope of gas; and the biosphere, every living thing.
Earth’s Spheres & System Interactions
Questions using biosphere
Problem 1
Which statement correctly uses biosphere in Earth’s Spheres & System Interactions?
- Earth’s spheres are independent sealed boxes.
- biosphere: Living organisms and their biological relationships within Earth’s systems.
- Every arrow in a system model represents the same kind of transfer.
- One illustrative result establishes every real condition and needs no further evidence.
Answer and explanation
biosphere: Living organisms and their biological relationships within Earth’s systems.
Living organisms and their biological relationships within Earth’s systems. 25 + 20 + 5 + 10 = 60 mL, accounting for the stated arrival. Rain connects atmosphere and hydrosphere; infiltration connects water with geosphere; leaf interception involves biosphere. Later evaporation, drainage, or uptake is not quantified, so this is a short-interval record rather than a complete annual account.