Question

1. what are microscopic unicellular, prokaryotic organisms that move through the earth doing both good and harm?

bacteria
archaebacteria
fungi
protists

Explanation:

Bacteria are microscopic unicellular prokaryotic organisms. They are ubiquitous on Earth and have both beneficial (e.g., in digestion, nitrogen - fixation) and harmful (e.g., causing diseases) roles. Archaebacteria are also prokaryotes but are often found in extreme environments. Fungi are eukaryotes (except for some single - celled yeasts, but overall their cell structure is eukaryotic). Protists are eukaryotes.

Answer:

A. Bacteria