Which subgroup of proteobacteria contains many species that are predators of other bacteria?

as many times as you want

the correct answer is:

a population changes in response to a change in the environment.

allowed for the prediction of the properties of missing elements.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs