Why are there two tides a day? - Elise Cutts

Used to refer to the person or people that the speaker is addressing. It is the second-person pronoun used for both singular and plural subjects and objects.

A system is a group of parts that work together as a whole. It can be used to describe a set of rules, a computer program, or a part of the body.

tall

"High mountain."

To swell or protrude outward beyond the normal surface, typically due to internal pressure or being overfilled. In a broader sense, it can describe a sudden, temporary increase in volume, quantity, or statistical data within a specific segment.

The sun is the large, bright star at the center of our solar system that provides light and heat to Earth. It appears in the sky during the day and is responsible for the daylight we experience.

"The sun is important."

The large round object that circles the Earth and shines at night. It reflects light from the sun and appears in different shapes throughout the month.

"The moon is important."

The amount or quantity of something that is as much as is needed or required. It indicates that no more is necessary to achieve a goal or satisfy a desire.

"The enough is important."

A large natural flow of water that travels across land and into the sea or a lake. It is a moving body of water that usually starts in mountains or hills.

A wave is a raised line of water that moves across the surface of an ocean or lake. It is usually created by the wind and ends by breaking on the shore.

An orbit is the curved path that a planet or object takes as it moves around a star or planet. It describes how things in space travel in a circle or oval shape around a larger body.

Gravity is the natural force that pulls objects toward each other, especially toward the center of the Earth. It is what makes things fall to the ground and keeps us from floating away into space.