Amineral with a harness of 4 with a mineral with a hardness of 5 a: can scratch b: can be scratched by c: cannot scratch or be scratched by

The bacteria found in a soil is usually harmful and measure are taken to remove any traces of microorganisms 1. true 2. false

Select the true statements about eubacteria. most live as decomposers and heterotrophs. most only thrive in a narrow range of environments. certain eubacteria are responsible for food poisoning. eubacteria thrive in extreme environments.

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic