Which of the following do scientists think will probably cause Earth's next ice age? A. changes in the planet's orbit and the tilt of its axis

B. very slow continental drift

C. an increase in sunspots

D. several major volcanic eruptions

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Rocks that contain crystals that are roughly equal in size and can be identified with the unaided eye are said to exhibit a texture.

The world wars of the twentieth century immediately led to a. the establishment of a communist bloc in eastern europe b. the urbanization of europe’s societies c. an emphasis on humanism d. an emphasis on ties to greek and roman societies select the best answer from the choices provided. a b c d