awnser : 6.02×1023 molcules
Answer:
O-18 is used as a tracer in many hydrologic studies. It is most often used as a component in a mixing-model and hydrograph separation, as O-18 acts conservatively and is applied naturally and uniformly over broad areas. O-18 can be used when different sources (old water/new water) have different isotopic values.
Answer: the answer is in the photo pls check and pls pls mark me as brainliest
Explanation:
At the front of the eye is the cornea is the clear part of the eye's protective covering
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