Acid Rain is the problem threatening many of Europe's (most specifically Germany's) forests, lakes, and rivers. Acid rain travels via the wind and the acid pollutants can travel through this said wind to multiple countries. It was a large problem in the 1970's and 80's.
They need to have the exact copy of the cell, so it does takes time.
The answer for this problem is B
Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes
