B. False their are tons of ethnic islands some I don't even know about even though their are some in city locations their not all there.
Thankyou magical genie that's out of the lamp !!!!!
The evidence is tested repeatidly to ensure it produces the same results of idenitifcation and comparison. If the same result is produced, it is considered reliable. A test must be sensitive in the sense that it identifies the unique characteristics of the sample. For example, a DNA test can identify people based on their unique DNA. Finally, tests are specific if they identify particular substances. A test would be specific if it identified the presence of a particular drug, like cocaine, with no other drugs giving the same result.