Decomposer-Scavenger in the ecosystem

In daily life, each of us has such an experience or experience that the fruits, food, clothing, wood, etc. placed will deteriorate, mold, and rot after a long or short period of time. This is the result of microbial decomposition. Although this function of microorganisms will cause the loss of human survival resources, it is indispensable for the survival, continuation and development of ecosystems and even the global organisms.

Every organism in the ecosystem must absorb water, energy and nutrients from the surrounding environment during its life activities; in its growth, breeding and other life activities, it will continuously release and excrete various substances to the surrounding environment The biological debris after death must also return to the environment. Each type of organism in the ecosystem has different nutritional requirements, or even completely different. The living things on earth can be divided into three categories: plants, animals and microorganisms. Green plants (including photosynthetic microorganisms) use inorganic compounds in the soil (such as ammonia or nitrates, phosphates and other inorganic minerals), carbon dioxide and oxygen in the air, and water as nutrients, and use solar energy to fix carbon dioxide to synthesize itself , Providing food for animals, is a producer in the ecosystem; animals take plants or other animals as food, and provide energy and nutrients for themselves by digesting food; consumers in the ecosystem; microorganisms pass Decomposing animal or plant residues or humus obtains energy and nutrients to synthesize itself, and at the same time decomposes organic matter into inorganic compounds that can be used by plants. It is a digester in the ecosystem. Microbes can clean up the dead animal and plant residues on the earth, and decompose the organism into the elements that the producers need to grow, so the microorganisms are regarded as "scavengers" in the ecosystem. We can imagine that without the decomposition of microorganisms, the animal, plant residues and organic matter on the earth will not be decomposed, so the result of life activities in the past billions of years will be to The accumulation of animal and plant debris, the nutrients of plant growth will be exhausted, producers will not be able to produce, consumers will not have access to food, and life on earth will be unsustainable. Therefore, the decomposition of microorganisms is one of the driving forces behind the wave-like development and spiral evolution of life on Earth. Stacked up in the form of animal and plant debris, the nutrients for plant growth will be depleted, producers will not be able to produce, consumers will not get food, and life on earth will be unsustainable. Therefore, the decomposition of microorganisms is one of the driving forces behind the wave-like development and spiral evolution of life on Earth.

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