The phenomenon of high and low tides and the difference in sea levels give ........

Explanation:

Tidal energy

The higher the tidal coefficient, the larger the tidal range – i.e. the difference in water height between high and low tide. This means that the sea level rises and falls back a long way. ... We talk of strong tides – called spring tides – from coefficient 95. Conversely, weak tides are called neap tides.