Question

what is tide? how are tides caused? mention its usefulness​

Answer 1

Explanation:

Tides are the cyclic rising and falling of Earth's ocean surface caused by the tidal forces of the Moon and the Sun acting on the Earth. Tides cause changes in the depth of the sea, and also produce oscillating currents known as tidal streams, making prediction of tides important for coastal navigation.

Answer 2

Answer:

Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the moon and the sun ..

Tides are caused by gravitational pulls of the moon and the sun..

It's usefullness are :-

1) it helps to remove pollutants and circulate nutrients ocean plants and animals need to survive