The line would have to pass through at least two points.
Sahara is the answer! hope this helps! :)
The pointy things that hang down from the cave's ceiling are stalactites. (A)
The pointy things that grow up from the cave's floor are stalagmites.
(I imagine wearing shorts and hiking through tall grass in the Summer, and I say to myself "When the Mites go up, the Tights have to come down.".)
Wearing heavy or protective clothes in the cold climates is the human action that does not alter the Earth's landscape.
Happy Studying! ^=^
productive, when the soil is formed it is highly fertile therefore making it easier for plants to grow there