In which atmospheric layer is the ozone layer?
a -stratosphere
b-mesosphere
...
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Which of the following factors is not used to measure a country’s standard of living? a.) life expectancy b.)educational levels c.)divorce rates d.) gross income
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Which season occurs in the northern hemisphere when the sun is at its lowest point in the sky
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These are the abiotic factor or biotic factors that restricts the numbers, reproduction, or distribution of organisms.
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