Question

1. what archaea live on the surfaces of swamps, marshy lands, and intestines of cows?

halophiles
methanogens
pyrogens
thermoacidophiles

Explanation:

Methanogens are a type of Archaea that produce methane as a metabolic by - product. They are commonly found in anaerobic environments such as swamps, marshy lands (where there is little oxygen) and the intestines of cows (which is also an anaerobic habitat). Halophiles thrive in high - salt environments. Pyrogens are substances that cause fever in the body (not relevant to the habitat described here). Thermoacidophiles live in hot, acidic environments.

Answer:

methanogens