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The Natural-Core Purpose of Mosquitoes on Planet Earth

The family Culicidae, which contains over 3,600 species of tiny flies, includes a group of insects known as mosquitoes (or mosquitoes) (from the Latin culex meaning “gnat”). The Spanish and Portuguese words “mosquito” and “mosquitito” both mean “small fly.” Mosquitoes have three pairs of long, hair-like legs, a slender, segmented body, one pair of wings,…

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Nitrogen Cycle – Ecosystem (Nutrient Cycling in Nature)

Nitrogen is a very important element required for the formation of amino acids (basic protein units) and nucleic acids. Most parts of animal and plant bodies are made up of proteins. This explains why nitrogen is so important for proper growth to take place in plants and animals. Nitrogen, unfortunately, does not exist in a…

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Food chain – Ecosystem

Whatever the situation, an ecosystem consists of three nutritional groups: 1. Producers (autotrophs organisms, mainly green plants) so-called because they are responsible for synthesising organic food.2. Consumers (heterotrophs, mainly animals). These are non-producing, organisms. They depend directly or indirectly on green plants.3. Decomposers (saprophytic organisms, mainly bacteria and fungi). The food chain represents a detailed,…

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Energy Flow – Ecosystem

One way to organise our information about the kinds of organisms in an ecosystem is by considering the movement of energy within the ecosystem, Energy is a common requirement of all organisms for maintaining themselves and for reproduction. Solar energy is trapped by the green plant to manufacture carbohydrates, which form the essential food source…

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Energy Loss in the Ecosystem

More than half of the radiant energy that reaches the earth’s atmosphere is reflected. Depending on the latitude and cloud cover, the solar energy that reaches the earth in a year is estimated to be 5.25 million kjlm2/yr. This quantity is known as the solar constant. This large flow of energy reaching the earth is…

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Carbon Cycle – Ecosystem (Nutrient Cycling in Nature)

The amount of carbon dioxide in the atmosphere is maintained by a balance between the process (photosynthesis) which withdraws carbon dioxide (CO2) from it and those (respiration and combustion) which add carbon dioxide to it. The carbon cycle is mainly the processes, which bring about the circulation of carbon compounds in nature. The air around…

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The Water Cycle – Ecosystem (Nutrient Cycling in Nature)

All living organisms contain a high percentage of water. When rain falls, some of it is absorbed by plants through their root hairs from the soil. After spending some time in plants, excess of it evaporates from their leaves in the process of transpiration. Only a small amount of water absorbed is used in photosynthesis…

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Role of Decomposers – Ecosystem (Nutrient Cycling in Nature)

They play an important role in the cycling of nutrients, hence allowing the ecosystem to function through materials and energy flow, e.g., the decomposing materials are known as detritus which are eaten by small animals (earthworms) otherwise known as detritovores. The activities of decomposers help to break down complex compounds into the simple ones which…

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Decomposition in Nature – Ecosystem (Nutrient Cycling in Nature)

Decomposition is the final stage in the cycling of matter and energy flow in an ecosystem. Although, they are not shown in most food chains, decomposers form a link between producers, consumers, and the biotic environment. Organisms involved in the decomposition process are known as decomposers. They play a vital role in the decaying process…

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Nitrogen Cycle – Ecosystem (Nutrient Cycling in Nature)

Nitrogen is a very important element required for the formation of amino acids (basic protein units) and nucleic acids. Most parts of animal and plant bodies are made up of proteins. This explains why nitrogen is so important for proper growth to take place in plants and animals. Nitrogen, unfortunately, does not exist in a…

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Heterotrophs

Heterotrophs are non-producing organisms of the ecosystem. They obtain their food from autotrophs; hence, they are called consumers. They are chiefly animals, that depend directly or indirectly on autotrophs (green plants). Energy used by heterotrophs is derived from the chemical energy stored in food. They eat food to obtain energy for their activities and the…

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Functioning Ecosystem

The term ecosystem was first proposed by Tansley in 1935. In the study of ecology, it is regarded as the major starting point and a most important concept. It is generally accepted as the main structural and functional unit of ecological studies. Ecosystems include the biotic (living ) and abiotic (non-living) components interacting with one…

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Effects of Agricultural Activities on Ecological Systems

In nature, the law of dynamic balance is maintained between the environment and all communities of living and non-living things. Human activities have, however, caused considerable upset of this balance by exploitation (removal of substances) or introduction into the system of other substances, which were originally not part of it. Agricultural activities are among such…

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