Unit 9: Ecology

Front

What is the Nitrogen Cycle?

Back

The Nitrogen Cycle is the process by which nitrogen is converted between its various chemical forms. It involves fixation by bacteria, incorporation into organic matter, and return to the atmosphere.

Front

What is the Carbon Cycle?

Back

The Carbon Cycle is the series of processes by which carbon compounds are interconverted in the environment. Key processes include photosynthesis, respiration, and the burning of fossil fuels.

Front

What gas is a major contributor to global climate change?

Back

Carbon dioxide is a major greenhouse gas that contributes to global climate change.

Front

What is biomagnification?

Back

Biomagnification is the process by which toxins accumulate in higher concentrations as they move up the food chain.

Front

What is competition in ecology?

Back

Competition occurs when two or more species or individuals vie for the same resources, such as food or habitat.

Front

What role do fixing bacteria play in the Nitrogen Cycle?

Back

Fixing bacteria convert atmospheric nitrogen into forms that plants can absorb and use.

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What is the significance of photosynthesis in the Carbon Cycle?

Back

Photosynthesis is the process by which plants convert carbon dioxide into organic matter, playing a crucial role in the Carbon Cycle.

Front

What are trophic levels?

Back

Trophic levels are the hierarchical levels in an ecosystem, comprising producers, primary consumers, secondary consumers, and so on.

Front

What is an invasive species?

Back

An invasive species is a non-native species that spreads widely in a new habitat, often causing harm to native species and ecosystems.

Front

How do fossil fuels impact the Carbon Cycle?

Back

Burning fossil fuels releases carbon dioxide into the atmosphere, contributing to the greenhouse effect and climate change.