<span>Waves in a given area typically have a range of heights. For weather reporting and for scientific analysis of wind wave statistics, their characteristic height over a period of time is usually expressed as significant wave height. This figure represents an average height of the highest one-third of the waves in a given time period (usually chosen somewhere in the range from 20 minutes to twelve hours), or in a specific wave or storm system. HOPE IT HELPS</span>
Answer:
C - Regulate how much carbon dioxide a country can emit
Formed by mud and sand in rock
Answer:No.
Explanation: It would be just about impossible to count all organisms in an ecosystem cause there would be so much to do. It would be un-human like to do something like that.