The study of ancient magnetic fields is called ________.
A. old magnetism
B. paleomagnetism
C. Curie point
D. magnetic polarities
E. paleontology
Answer: B
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Tectonic plates are pieces of the ________ that float on the more fluid ________ below.
a) asthenosphere; lithosphere b) lithosphere; asthenosphere c) lithosphere; mesosphere d) mantle; crust e) crust; lithosphere
The domestication of plants and animals allowed humans to alter ecosystems for their benefits. Which of the following is an example of a human benefit that resulted from ecosystem change?
A) Crop production increased and more people had food to eat. B) Crop production decreased as natural habitats were replaced. C) Grasslands were destroyed and predator insects were destroyed. D) Grasslands were destroyed and replaced with forests. E) Crop production increased as a result of more plants competing for the same land space.
Earth’s magnetic field ____.?
a. ?changes polarity due to motions in Earth’s mantle, while plate motion remains relatively stable b. ?changes polarity due to motions in Earth’s core, while plate motion remains relatively stable c. ?changes polarity due to motions in Earth’s crust, while plate motion remains relatively stable d. ?remains stable, while plate motion oscillates back and forth e. ?remains stable, while magma motion oscillates back and forth
Give a brief definition of the term climate
What will be an ideal response?