Answer:
The water is the medium of the wave
Answer:
5.0×1022 sa taas po yang 22
An environmental scientist studies the environment - you can see that in the beginning of the sentence :)
Answer : Option D) 
Explanation : When a positron is getting absorbed it means it will be
so, the
will get converted;
So, the whole reaction will be;
+
---->
.
This will convert the whole element of Cu will get changed into Zn. As, it absorbs by the positron, the atomic number gets increased from 29 to 30.