Thearly Atmosphere

question 37

Multiple Choice

Thearly atmosphere

• A)was essentially the same as occurs now.
• B)was changed drastically by the liberation of oxygen following the evolution of photosynthesis.
• C)was characterized by high concentrations of oxygen and ozone.
• D)was characterized by high concentrations of inert gases before the evolution of living organisms.
• E)was so dense that life could not evolve.

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Definitions:

Stable Population

A population size that remains consistently within a small range, indicating a balance between birth rates and death rates.

Canadian Residents

Individuals who legally reside in Canada, including citizens, permanent residents, and certain temporary residents.

Canada-U.S. Border

The international boundary between Canada and the United States, stretching over 5,525 miles, including land and water boundaries.

Society's Quality

The overall condition and well-being of a society, often assessed by factors like health, education, and income.