Answer:
B. a sequence of DNA bases that duplicates a sequence of RNA bases.
Explanation:
Transcription is the first step in gene expression. It involves copying a gene's DNA sequence to make an RNA molecule.
Answer:
The particularly severe winter of 1777-1778 proved to be a great trial for the American army, and of the 11,000 soldiers stationed at Valley Forge, hundreds died from disease. However, the suffering troops were held together by loyalty to the Patriot cause and to General Washington, who stayed with his men.
Explanation:
One of the species dieing off.
UVB radiation increases? This damages the eyes, skin and immune system! Sorry! I just guessed because there were no choices that went along with the question!
Needles.
Sharing needles or things that you can eject through your skin (ex. drugs)
Infected tattoo needle that wasn't cleaned and disinfected properly
