Why was the concern over global cooling replaced with a concern over global warming?
a. the science community needed a cause to frighten the general population.
b. steady surface temperature increases were noted between the 1970’s and 90’s.
c. air pollution only became a concern in the 1980’s.
d. scientists observed severe ocean acidification.

Topographic maps are used to measure a-composition b-movement c-elevation d-texture

Short answer/constructed response: respond to the question in 3-5 complete sentences. give details or examples to support your answer. attempt to answer all parts of the question in paragraph form! using the source 1 map, pick two of the 1800's territorial acquisitions you believe were the most important in the development of the united states. provide at least two reasons per territory to explain why you think they were the most important.

How do you think the different landforms of northern and southern europe would affect ways of life in those two areas