Ch.3 The Biosphere Test

Front

What is the biosphere?

Back

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

Front

Define 'wetland'.

Back

A wetland is an area where water covers the soil, either permanently or seasonally, and supports aquatic plants.

Front

What is the photic zone?

Back

The photic zone is the upper layer of a body of water that receives enough sunlight for photosynthesis to occur.

Front

What is the aphotic zone?

Back

The aphotic zone is the deeper layer of water where sunlight does not penetrate, making photosynthesis impossible.

Front

What is an estuary?

Back

An estuary is a coastal area where freshwater from rivers meets and mixes with saltwater from the ocean.

Front

What is the significance of the atmosphere in the biosphere?

Back

The atmosphere provides essential gases for life, such as oxygen and carbon dioxide, and influences climate and weather patterns.

Front

What are measurable changes in the Earth system?

Back

Measurable changes in the Earth system include observable phenomena such as climate change, sea level rise, and increased frequency of severe weather events.

Front

What is an ecosystem?

Back

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

Front

What role do producers play in an ecosystem?

Back

Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.

Front

What is biodiversity?

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the number of species and genetic diversity.