Please help i need an answer asap :(

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

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

Development has provided electrically for less money but what may be considered a cause of nuclear power