The biosphere level and its limits
Answers are for parents and teachers.
1
At the foot of a mountain the temperature is 20 °C. If it falls 0.6 °C per 100 m, what is it at 2000 m?
8
2
Name the three shells and the part of each that belongs to the biosphere.
Atmosphere – lower layer; hydrosphere – all; lithosphere – upper layer.
3
If the ozone layer thinned, what risks would arise for people and crops? Write two.
More skin burns and eye diseases; crop yields decrease.
4
Surface is 12 °C; if temperature rises 3 °C per 100 m of depth, what is it at 1500 m?
57
5
Why do plants not grow in the deep ocean?
Light does not reach there, so photosynthesis cannot occur.