Carbohydrates-like pasta,gives you energy.
fibre-like shreddies,helps digestion.
minerals-like calcium,for teeth and bones.
vitamins-like vitamin tablets,it helps immune system.
fats.
protein.
Macronutrients is defined in several different ways.[4]
Substances that provide energy
Substances that support metabolism
Plants absorb nutrients from the soil or the atmosphere, or from water (mainly aquatic plants) an exception are the carnivorous plants, which externally digest nutrients from animals, before ingesting them.[6]
The chemical elements consumed in the greatest quantities by plants are carbon, hydrogen, and oxygen. These are present in the environment in the form of water and carbon dioxide; energy is provided by sunlight.[7] Nitrogen, phosphorus, and sulfur are also needed in relatively large quantities. Together, the "Big Six" are the elemental macronutrients for all organisms,[8] often represented by the acronym CHNOPS.[9] Usually they are sourced from inorganic (e.g. carbon dioxide, water, nitrate, phosphate, sulfate) or organic (e.g. carbohydrates, lipids, proteins) compounds, although elemental diatomic molecules of nitrogen and (especially) oxygen are often used.
Other chemical elements are also necessary to carry out various life processes and build structures; see fertilizer and micronutrient for more information.
Some of these are considered macronutrients in certain organisms. The mnemonic C. HOPKiN'S CaFe Mg (to be used as C. Hopkins coffee mug) is used by some students to remember the list as: carbon, hydrogen, oxygen, phosphorus, potassium, nitrogen, sulfur, calcium, iron, and magnesium. Silicon, chloride, sodium, copper, zinc, and molybdenum are sometimes also included, but are in other cases considered micronutrients.[10]
Essential and non-essential nutrientsNutrients are frequently categorized as essential or nonessential. Essential nutrients are unable to be synthesized internally (either at all, or in sufficient quantities), and so must be consumed by an organism from its environment.[11] Nonessential nutrients are those nutrients that can be made by the body, they may often also be absorbed from consumed food.[11] The majority of animals ultimately derive their essential nutrients from plants,[11] though some animals may consume mineral-based soils to supplement their diet.For humans, these include essential fatty acids, essential amino acids, vitamins, and certain dietary minerals. Oxygen and water are also essential for human survival, but are generally not considered "food" when consumed in isolation.
Humans can derive energy from a wide variety of fats, carbohydrates, proteins, and ethanol, and can synthesize other needed amino acids from the essential nutrients.
Non-essential substances within foods can still have a significant impact on health, whether beneficial or toxic. For example, most dietary fiber is not absorbed by the human digestive tract, but is important in digestion and absorption of otherwise harmful substances. Interest has recently increased in phytochemicals, which include many non-essential substances which may have health benefits.[1]
Proteins, fats, carbohydrates.
Mineral.
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The amount of nutrients in freshwater will determine what type of organisms there are. If there is bacteria in the water, it may affect the nutrients and contaminate them, which will affect the organisms that live in the water.
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All foods contain nutrition, but the type of nutrients depends on the type of food, for example meats contain proteins.
Complex nutrients are a type of sustinance that contain a high nutritional value and are often difficult to breakdown than simple nutrients. Complex nutrients are often found in foods such as whole grains and vegetables.
Nutrients pass through the capillaries (a type of blood vessel) in the small intestine.
digestive system
low nutrients and acidic
Fiber
They are type of cynobacteria.So they are prokaryotic.