Fossils found in layers of sediment give us clues to earth's past. based on the fossil record of this area, we can assume that this area was a) once a desert. b) once underwater. c) much colder in the past. d) located in a different place on earth.

The answer is B, Once underwater

Explanation:

I took the test

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

2b2t

explanation:

2b2t