I just got 80% on my test it might be c but im pretty sure i was right
Answer: Sulfa antibiotics target a specific enzyme that inhibits bacterial growth. ... Viruses are unaffected by antibiotics because they do not have peptidoglycan cell walls or ribosomes, and they do not replicate their own DNA. Bacteria can become resistant to antibiotics through the process of selection and evolution.
Explanation:
There's 2 in the first energy level
Which leaves 2 left to go in the second level
Btw the second level can normally hold a max of 8
A control group is kept the same to determine whether or not what you did for an experiment on the experimental group was actually caused by the experiment performed, and not other environmental changes. By keeping the same climate, environments, nourishment, etc. on a control group and experimental group, but only performing the experiment on the experimental group, you can prove your experiment actually works.