The sea that forms Polands northern boarder is called Baltic
Geographers run into problems with maps because they don't know the how to solve the map problem, how they can solve the problem is by watching the stray and the lines on it so that they can notify it and it won't be a problem for them that do the maps
Answer:
2.62 years
Explanation:
The half life of a material is the time taken for half of the number of radioactive atoms in a radioactive material to remain.
If a radioactive material is cut into pieces, each piece has the same half life as the whole material.
Hence, if Strontium-147 is cut into pieces, each piece will have a half life of 2.62 years, just as the whole material.
