Which of the Following Is an Important Long-Term (Acting Over

question 7

Multiple Choice

Which of the following is an important long-term (acting over spans of tens of millions of years) factor in global climate change?

• A)decrease in albedo due to soot from volcanic eruptions
• B)variation in Milankovitch orbital parameters
• C)variation in the abundance of sunspots
• D)atmospheric concentration of carbon dioxide

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Definitions:

Directional

Pertains to hypotheses or tests that specify the expected direction of the relationship or difference between variables, as opposed to non-directional or two-tailed tests.

Non-directional

A hypothesis that does not specify a direction of difference or association between two variables.

Standard Error

A measure of the statistical accuracy of an estimate, indicating how much the sample mean is expected to vary from the true population mean.

Mean

The average of a set of numbers, calculated by dividing the sum of all values by the count of values, and used as a measure of central tendency.