Which of the following provides a basis for the much-studied temperature record of the past 140 years?
A. ice cores and fossil shells
B. air temperature over land and the oceans
C. air temperature over the oceans and fossil shells
D. air temperatures over land and tree rings
Answer: B
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What is the main factor that determines whether a volcanic eruption is explosive or effusive? How does that factor affect eruptions in this way?
Which of the following is the basis of one Earth year?
a. One complete revolution of Earth around the Sun b. One complete rotation of Earth on its axis c. One complete rotation of the Moon on its axis d. One complete cycle of the phases of the Moon
The Coriolis force is strongest at the equator. Indicate whether the statement is true or false
During the cold phase of the El Niño, the warmest waters are located at
A) A.
B) B.
C) C.
D) D.