_____ Plants and bacteria start the carbon cycle with consumption.

검증된 단계별 안내

Understand the role of plants and bacteria in the carbon cycle: they are involved in the initial step of consuming carbon-containing compounds.

Recall that plants perform photosynthesis, a process where they consume carbon dioxide (CO\_2) from the atmosphere to produce organic molecules.

Recognize that certain bacteria also consume carbon compounds, either by fixing CO\_2 (like cyanobacteria) or by decomposing organic matter.

Identify the term that describes organisms that consume inorganic carbon (CO\_2) to produce organic compounds, which is 'autotrophs'.

Conclude that the blank should be filled with 'Autotrophic' or 'Autotrophs' to indicate that plants and bacteria start the carbon cycle by consuming carbon dioxide through autotrophic processes.

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주요 개념

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Carbon Cycle

The carbon cycle is the natural process through which carbon atoms travel from the atmosphere into organisms and the Earth, then back into the atmosphere. It involves key steps like photosynthesis, respiration, decomposition, and carbon fixation, maintaining the balance of carbon essential for life.

Photosynthesis in Plants

Photosynthesis is the process by which plants convert carbon dioxide and sunlight into glucose and oxygen. This process initiates the carbon cycle by capturing atmospheric carbon and incorporating it into organic molecules, which serve as energy sources for other organisms.

Carbon Fixation by Bacteria

Certain bacteria, such as cyanobacteria and chemoautotrophs, fix carbon by converting inorganic carbon dioxide into organic compounds. These bacteria contribute to the carbon cycle by providing a primary source of organic carbon in ecosystems, especially in environments where plants are absent.