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Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. Some examples of important scientists are: Stephen Hawking, Albert Einsten, Isaac Newtown and Nikola Tesla.

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For the most part, macronutrients are nutrients that help provide energy and the body needs them in large quantities

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Marine ecosystems are the largest of Earth's aquatic ecosystems and exist in waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content. Marine waters cover more than 70% of the surface of the Earth and account for more than 97% of Earth's water supply and 90% of habitable space on Earth.

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Freshwater ecosystems are a subset of Earth's aquatic ecosystems. They include lakes, ponds, rivers, streams, springs, bogs, and wetlands. They can be contrasted with marine ecosystems, which have a larger salt content.

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Its function is to defend the body, accelerate chemical reactions, transport substances and cellular communication

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Terrestrial ecosystems are ecosystems that are found on land. Examples include tundra, taiga, temperate deciduous forest, tropical rain forest, grassland, deserts.

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Its basic function is to provide energy to the body

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Just like carbohydrates and proteins, fat is a very important macronutrient for the functioning of the human body, it already performs specific functions in the body. A balanced consumption, like that of other macronutrients, can generate several positive effects and prevent possible health problems