Final answer:
President George W. Bush faced criticism from environmentalists due to his administration's decision to not participate in the Kyoto Protocol and pursue policies that increased acid producing emissions from power plants.
Step-by-step explanation:
President George W. Bush was criticized by environmentalists because his administration rescinded Clinton's environmental protection executive orders, declared that the United States would not participate in the Kyoto Protocol, and moved towards policies favoring the oil industry, including supporting controversial legislation for oil drilling in national wildlife refuges. Bush's approach to environmental policy was in sharp contrast to the actions and initiatives led by his predecessors, and his decision to not sign the Kyoto Protocol meant that the United States remained the only developed nation not part of the agreement as of 2011. The appropriate answer to the question is that Bush was criticized because his administration moved to increase the allowed level of acid producing emissions from power plants.