Unit 2: Ecology Test Review 2023

Front

What are abiotic factors in an environment?

Back

Abiotic factors are the non-living components of an ecosystem, including weather, atmospheric conditions, and pollutants.

Front

What are biogeochemical cycles?

Back

Biogeochemical cycles are the cycling of elements between living (biotic) and non-living (abiotic) components of the environment.

Front

What does the term 'biosphere' refer to?

Back

The biosphere is the global sum of all ecosystems, where life exists, including land, water, and the atmosphere.

Front

Which sphere experiences the greatest increase in carbon levels due to human activities?

Back

The atmosphere experiences the greatest increase in carbon levels due to human activities such as burning fossil fuels.

Front

What is a niche in an ecosystem?

Back

A niche is the role or function of an organism within its ecosystem, including its habitat, resource use, and interactions with other organisms.

Front

Define 'ecosystem'.

Back

An ecosystem is a community of living organisms interacting with their physical environment.

Front

What are the main components of an ecosystem?

Back

The main components of an ecosystem include biotic factors (living organisms) and abiotic factors (non-living elements like air, water, and soil).

Front

What is the difference between biotic and abiotic factors?

Back

Biotic factors are living components of an ecosystem (plants, animals, microorganisms), while abiotic factors are non-living components (sunlight, temperature, water).

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water through evaporation, condensation, precipitation, and infiltration.