Which of the following statements best characterizes how developed and developing countries impact the environment?
a.
neither developed nor developing countries have had a significant impact on the environment in the past century.
b.
developed countries have tended to improve the environment, while developing countries have tended to damage it.
c.
developed countries have damaged the environment, while developing countries have had little impact.
d.
both developed and developing countries have had significant negative impacts on the environment.