Answer:
The bacteria infected with viruses that had radioactive DNA had become radioactive. The bacteria that had been infected with viruses marked with radioactive proteins were not radioactive.
Explanation:
The rest of the answers:
1.2
2.3
3.2
4.1
5.b
A physical factor that influences an ecosystem is called an "abiotic factor."
Explanation:
The dog salivating is an example of responding to stimuli
