Answer: The killer is C; Karen
Explanation:
After looking at the birdbaths results and Karen's results, you can see that they are the same. This will make Karen the killer. Since the killer washed their hands in the birdbath, the detectives were able to get trace amounts of DNA.
DNA fingerprints are determined by a chemical test. This takes the persons genetic makeup and matches it with other peoples that are in a database. This type of DNA testing can be used in courts, identify bodies, find cures, and also look for missing people.
Organisms compete for the resources they need to survive- air, water, food, and space.
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The main source of heat energy in the earth's inner core is radioactive decay, and the radiogenic heat producted by the radiogenic decay of isotopes in the mantle and crsut. I hope this helped
