Shale rock was found on the top layer of a limestone sample. there is a leaf imprint on the shale rock and a fish fossil on the limestone. what can scientists learn from the imprint and fossil?
a) the area has always been land with trees.
b) the area was once a desert with palm trees.
c) the area changed from water to land with trees.
d) the area changed from land with trees to water.

Aremote community desperately needs more electrical energy. it is located in an area with the following characteristics: average wind speed of 15 – 20 km/hr some medium-sized rivers with slow-moving currents few coal deposits some oil exploration being conducted within 400 miles based on the above information, which energy source would be the most economical and safest for the community to pursue? a. fossil fuel b. hydroelectric c. nuclear d. wind