Which of the following would be an appropriate way to describe the luster of the mineral in the photo? (its an picture of an amethyst ) pls 1-fractured 2- glassy 3- purple 4- sharp

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called