Which task does a volcanologist do to study volcanoes? Check all that apply. 1. use autoclave to imitate the interior of a volcano.

2. simulate volcanic explosions with computer programs.

3. study lava samples.

4. listen to the sounds of the interior of a volcano.

5. provide daily vog forecasts on TV news.​

Select the correct text in the passage. the moving continents affect all subsystems on earth. which sentence identifies a potentially negative consequence of shifting continents? the supercontinent pangaea began to break up about 175 million years ago. [during this process, more coastline was exposed as the landmasses separated]. [the rearrangement and displacement of these huge landmasses resulted in the diversity of plants and animals we see on earth today]. [the movement of the plates sometimes leads to earthquakes and tsunamis]. however, over the long course of earth's history, their effects are usually minimal. in oceans, the plate movements usually lead to seafloor spreading. [seafloor spreading often results in the formation of underwater ranges of mountains].

Ozone in the upper atmosphere has been depleted by a. sulfur dioxide. b. chlorofluorocarbons. c. carbon dioxide. d. oxygen.

The desert expands by hundreds of square miles each year.