It is Chemistry.
Cu+AgNO3=Ag+Cu(NO3)2
==>
Cu+2AgNO3=2Ag+Cu(NO3)2
Eukaryotic cells do not have a nucleus. The nucleus is where DNA, your genetic material, is usually stored. Prokaryotic cells do not have a nucleus. The DNA just floats around the cell instead of staying in one designated area.
Answer:
I think that it's false
Explanation:
The reason is because there is a thing called a 'Water Cycle'. It is basically the continuous movement of water on the surface of the Earth.
P.S. if I get it wrong, forgive me
I believe a valley or mountain, but I am not 100 percent sure.