List three ways in which scientists can detect changes in climate, particularly due to the accumulation of carbon
dioxide, by examining the geologic record. What will be an ideal response?
1. Ice cores contain a record of atmospheric carbon dioxide levels, along with other gases.
2. The geographic range of plants and animals can shift.
3. Oceans become more acidic, which would result in fewer coral reefs.
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Define the term economic threshold as it relates to pest control. What is cosmetic spraying and insurance spraying?
What will be an ideal response?
The infectious disease that poses the greatest risk of death for people living in northern Eurasia and Africa is
A) tetanus. B) measles. C) tuberculosis. D) hepatitis.
Why is the monsoon so crucial to life in South Asia?
What will be an ideal response?
Define "moraine." What are the types of moraines?
What will be an ideal response?