What is the proper ethical role of science in public policy? O to shape public opinion so that it agrees with science
to make government do the right thing
O to inform policy makers of the facts of an issue
O to refuse to testify on controversial issues

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

b. the carbon cycle ensures living things have a source of hydrogen

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.