Ecosystems and Interactions

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Questions and Answers

What is an ecosystem and what does it consist of?

An ecosystem consists of all the organisms and the physical environment with which they interact.

How are biotic and abiotic components linked together in an ecosystem?

Biotic and abiotic components are linked together through nutrient cycles and energy flows.

How does energy enter an ecosystem?

Energy enters the system through photosynthesis and is incorporated into plant tissue.

What role do animals play in an ecosystem?

Animals play an important role in the movement of matter and energy through the system by feeding on plants and on one another. Signup and view all the answers

What is the role of decomposers in an ecosystem?

Decomposers break down dead organic matter, release carbon back to the atmosphere, and facilitate nutrient cycling by converting nutrients stored in dead biomass back to a form that can be readily used by plants and microbes. Signup and view all the answers

What is climate change?

Climate change refers to the ongoing increase in global average temperature and its effects on Earth's climate system. Signup and view all the answers

What are the main causes of global warming?

The main causes of global warming are the burning of fossil fuels, deforestation, and certain agricultural and industrial practices, which increase greenhouse gas emissions. Signup and view all the answers

How do greenhouse gases contribute to global warming?

Greenhouse gases absorb some of the heat that the Earth radiates after it warms from sunlight. Higher levels of these gases trap more heat in Earth's lower atmosphere, leading to global warming. Signup and view all the answers

What are some impacts of climate change?

Climate change is causing increasing impacts on the environment, such as the expansion of deserts, more frequent heat waves and wildfires, melting permafrost, glacial retreat, and loss of sea ice. Signup and view all the answers

How does climate change affect the Arctic?

Climate change has led to amplified warming in the Arctic, resulting in melting permafrost, glacial retreat, and loss of sea ice. Signup and view all the answers

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