Grizzly bears, snakes, and worms are most likely to be members of the same community population species trophic level

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

Which food could be transported in a galvanized metal container?