Bacteria used in wastewater treatment include those that can convert ammonia and nitrite to nitrate, decreasing the reduced nitrogen content of the sewage. These bacteria, such as Nitrosomonas spp., often belong in:
a. Betaproteobacteria.
b. Gammaproteobacteria.
c. Alphaproteobacteria.
d. Deltaproteobacteria.

i don't know what the picture looks like but i can take a guess and say maybe basidiomycetes?

we would need to see the picture to answer it

answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

explanation: