Sea

The sea is a large body of water that covers over 70% of the Earth's surface. It is divided into four main oceans: the Pacific, Atlantic, Indian, and Arctic. The Pacific is the largest ocean, covering about 30% of the Earth's surface. The other three oceans are each about one-fifth the size of the Pacific. The sea is very important to life on Earth. It is a major source of food and water. It is also a major transportation route for ships and other vehicles.

Salinity

The ocean is salty because of the process of evaporation. When water evaporates, it leaves behind the salt. The more evaporation that occurs, the saltier the ocean becomes.

Marine life

The ocean is home to a vast array of marine life. Marine life consists of plants and animals that live in the salt water of the ocean. The ocean is a very big place and it is estimated that there are over two million different species of marine life. Marine life is very important to the health of the ocean. Marine life helps to keep the ocean clean and it also provides food for other animals.

Weather

The weather in the sea is affected by a variety of factors, including the temperature of the air and water, the amount of sunlight, the wind, and the amount of evaporation. The temperature of the air and water can affect the weather in the sea because they can affect the amount of evaporation that occurs. The amount of sunlight can affect the weather in the sea because it can affect the amount of evaporation that occurs. The wind can affect the weather in the sea because it can affect the amount of evaporation that occurs.

Conservation

The ocean is vital to life on Earth. It covers 71% of the planet's surface and contains 97% of the planet's water. The ocean regulates the Earth's climate and weather patterns. It is a major source of food and energy. The ocean also provides many people with jobs.