Paleoclimatology & Agriculture

Which of the following were defining characteristics of the Pleistocene epoch?

• stable global temperatures

• unstable global temperatures

• relatively cool temperatures overall

• relatively warm temperatures overall

Which of the following were defining characteristics of the Holocene epoch?

• stable global temperatures

• unstable global temperatures

• relatively cool temperatures overall

• relatively warm temperatures overall

δ18O values from ice cores and global temperature have a _____ relationship.

• direct

• indirect

Higher δ18O values indicate a _____ global temperature.

• higher

• lower

Lower δ18O values indicate a _____ global temperature.

• higher

• lower

The following chart shows:

• global temperature over time

• δ18O over time

• world population over time

δ18O data from ice cores can be used as an indirect measure of:

• precipitation

• atmospheric CO₂ levels

• global temperature

The highlighted portion of the chart represents:

• the Pleistocene epoch

• the Holocene epoch

• a period of alternating ice ages

• a period of with a warm, stable climate

The highlighted portion of the chart represents:

• the Pleistocene epoch

• the Holocene epoch

• a period of alternating ice ages

• a period of with a warm, stable climate

The highlighted portion of the chart represents:

• δ18O over time

• world population over time

• global temperature over time