Answer:
I believe it is the Danube River.
Explanation:
Something symmetrical might be a butterfly, being looked at from the top. Something that might be asymmetrical might be someones face.
It was written on the year 2011
Answer:
Messenger RNA (mRNA) is a single-stranded RNA molecule that is complementary to one of the DNA strands of a gene. The mRNA is an RNA version of the gene that leaves the cell nucleus and moves to the cytoplasm where proteins are made.
Explanation: