Multiple Choice
Scientists have attempted to measure historical temperatures by collecting data from various means.What is not one of these?
A) radioisotopes in rocks and sediments
B) pollen grains
C) air bubbles in ice cores
D) photos of glaciers
E) tree rings
Correct Answer:

Verified
Correct Answer:
Verified
Q24: Which of the following ecosystems is least
Q25: Major climate models predict _.<br>A) a 2-
Q26: _,such as N<sub>2</sub>O,CH<sub>4</sub>,and CO<sub>2</sub>,compose part of the
Q27: Climate models predict that global warming will
Q28: If human activities and natural factors combine
Q30: Which statement describes an advantage of carbon
Q31: It has been suggested that the threat
Q32: Which action would contribute to increased global
Q33: The minimum period of time for measuring
Q34: A rapidly changing climate is least likely