Answer:
long term development or proper utilization of plants
Answer: placer mining
Explanation: g.o.o.g.l.e is a very great thing
Forms of electromagnetic radiation like radio waves, light waves or infrared (heat) waves make characteristic patterns as they travel through space. Each wave has a certain shape and length. The distance between peaks (high points) is called wavelength.
Those are graphs....
with population and size on Y and X axis respectively