Which is an example of trace evidence?

a. an eyewitness sees a man flee from a robbery at a convenience store.

b. an old bloodstain on a floor is revealed by uv light.

c. tiny glass fragments are found outside a broken door of a jewelry store where a burglary occurred.

d. a gun is found at the scene of an armed robbery.

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