Answer:
Hydrogen
Explanation:
2 between A-T and 3 between G-C
1. The virus attaches itself to a host cell
2. The virus inserts its nucleic acid into the host cell
3. The virus nucleic takes over the host cell and makes virus parts
4. The cell creates more viruses
5. The cell bursts, releasing the new viruses
Volcanos spew, ava volcano ash and gases into the environment. this is an effect on the local energy