Constructive waves are the waves that build up the beaches. They have a large 'swash', which means they can carry deposits of sand and other materials far up the beach
Constructive wave is a wave that leads to the build-up of a beach, owing to the swash of the wave being more effective in moving material than the backwash. Usually, constructive waves are associated with low-energy conditions and a gentle offshore gradient.
These cycles are described as the collective changes that take place due to the effects of the earth's movements on its climate which prevails over the thousand of years.
The earth's rotation on the axis and the revolution around the sun involve the gravitational attraction thus creates variation and complex cycles. So the distance between the earth's and the sun and the moon create s variation as seen by the seasons.
It is associated with the timing of the northern lights and the shift in the temperatures of the surface waters of the midlatitudes of the pacific ocean.
If you can't divide the number by 4, then it isn't divisible by 4. Try to divide 24, 8, 12, and 10 by 4. If your result isn't a whole number (like 2.4), then it isn't divisible by 4.
features such as mountains (higher elevation = colder temperatures), ocean (winds blowing to land), valleys (could create a rain shadow, making it very rainy), etc.