CONCEPTS: altitude, atmosphere, temperature

GEN: plot of temperature and density in atmosphere up to an altitude of kilometers .

CONCEPTS: bed, mattress, pillow

GEN: The canopy bed has pillows arranged on the mattress.

CONCEPTS: bagpipe, test, tone

GEN: A man plays bagpipes and another man tests his tone.

CONCEPTS: call, live, organism

GEN:
habitat the specific environment an organisms lives in is called a habitat .