Depends on the situation Usually the hardest would be blood samples of the Unsub. Again It depends on the situation.
Ummmmmmmmmm..... chewing?
Answer:
Explanation:
Observation is essential in science. Scientists use observation to collect and record data, which enables them to construct and then test hypotheses and theories. Scientists observe in many ways – with their own senses or with tools such as microscopes, scanners or transmitters to extend their vision or hearing
Answer:
If water were a nonpolar molecule how would its properties be different A. Water would be able to climb inside plants. ... Water would no be able to form hydrogen bonds.
It is called speciation.
So it'll be D. Speciation
Hope this helped :)
