Why are pollen grains useful when studying the climate history of a region?

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service

In which state was more than 100 billion tons of coal mined in 2005?