Which of the following is NOT a mutagenic factor (causes mutations)? O chemicals we smoke or eat
O drinking water
O X-rays
O tanning

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is

not sure if this is what you'r looking for eubacteria and archaebacteria

not only is it colder, it also becomes darker, less salty, and more dense.