Which of the following statements is true? A. Radioactive waste released from nuclear power plants causes thermal pollution. B. A watershed is an underground supply of water that can be used for irrigation or drinking water. C. Recycling, walking instead of driving, and using less electricity are ways to protect the environment. D. Oil and coal are renewable fossil fuels formed from the remains of dead organisms.

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.

the name of the theory is landmass theory.