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What is the best way to test if a substance is a transition metal?

The number of living organisms in a particular area is

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature about 37 degrees celsius (98.6 degrees f)? describe what might happened the temperature decreased by 10 degrees celsius.

How do you date a sample of rock that you suspect as being one of the earliest on earth