G7 Chapter 7 Ecology Beginning

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What is the role of carbon in an ecosystem?

Back

Carbon is essential for life as it is a key component of organic compounds, including sugars, proteins, and fats. It is also involved in processes like photosynthesis and respiration.

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What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen.

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What is a trophic level?

Back

A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients from one organism to another, typically categorized as producers, primary consumers, secondary consumers, and so on.

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Why is energy transfer less efficient at higher trophic levels?

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Energy transfer is less efficient at higher trophic levels because energy is lost as heat during metabolic processes, and not all parts of an organism are consumed by the next level.

Front

What are producers in an ecosystem?

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Producers are organisms, primarily plants and algae, that create their own food through photosynthesis and form the base of the food chain.

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What is the impact of excess nitrogen in aquatic ecosystems?

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Excess nitrogen can lead to algal blooms, which cover water surfaces, block sunlight, and reduce oxygen levels, harming aquatic life.

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What is the carbon cycle?

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The carbon cycle is the process by which carbon is exchanged among the atmosphere, land, water, and living organisms, involving processes like photosynthesis, respiration, decomposition, and combustion.

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What is the significance of biodiversity in an ecosystem?

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Biodiversity enhances ecosystem resilience, productivity, and stability, providing a wider range of resources and services.

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What is an ecosystem?

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An ecosystem is a community of living organisms interacting with their physical environment, including both biotic (living) and abiotic (non-living) components.

Front

What is the difference between a food chain and a food web?

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A food chain is a linear sequence of organisms through which energy and nutrients flow, while a food web is a complex network of interconnected food chains.