Because it repeats the same process over and over again.
Question 3. Answer is A. Luster
Question 4. Answer is B. False
Question 5. Answer is B. Vitreous Luster
Question 6. Answer is A. Calcite
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They are geologic natural disasters.
Answer: False
Explanation: there are a Varity of viruses that affect plant life such as the mosaic virus which causes discolored splotches on the plants leaves.