0 the rise and fall of the sea that happens twice every day: --
The tide is out/in.
high/low tide
1 a noticeable change in a situation or increase in a particular type of behaviour: --
3 the rise and fall of the sea that happens twice every day: --
Consequently, tides are probably the main cause of long-distance gene flow via seeds.
However, the waves of new observation and theory inevitably combine with the tides of fashion to erode the topicality of even the best texts.
The moon and sun's gravitational forces mostly drive the longest waves (tides).
I am an ethicist, wading into tides that may wash me away.
In the law of the tides, gravity is the important systematic factor, and the small unsystematic factors include variations in weather.
An intending swimmer is prevented from entering the sea, because (it is reasonable to suppose) this person does not realize that the tides are dangerous.
On the face of it, the zone between the tides seems a poor environment for living things.
The industry is rather like the element from which it draws its produce—it is subject to tides and to alternating periods of storm and calm.
