Brad is testing three solutions with litmus paper. after dipping the litmus paper strips in the solutions, he observes two papers turning blue and one turning red. out of the three solutions, how many are acidic?

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels

How does human environment effect the biosphere

How will you manage your time to accomplish the necessary tasks both on the job and at home?