How are we gonna know you gotta help us help you you know what im sayin
The second one because they can indicate infection and sickness
Answer:
A
Explanation:
Today, the atmosphere holds about 21 per cent oxygen. ... When the first simple organisms appeared in the oceans more than 3.5 billion years ago, the atmosphere was mostly nitrogen, hydrogen, water vapor, and carbon dioxide
Answer: 5 prime cap
Shortly after RNA polymerase begins to transcribe a pre-mRNA, a 5 prime cap is added.
, Hope this helps :)
Have a great day!!
