Explain how each person and group played a crucial role in the cleanup of lake washington

The cleaning process of Lake Washington is an excellent example of community or people matter scenario. Lake Washington is in Washington USA and was polluted by sewage dump and other nutrients into the water which greatly harmed it. The people caused a huge pressure on authorities to take an immediate action to save the Lake, as a result the government acted and installed systems where the wastes were not dumped into the lake but were taken to another point where it can be diluted into sea.
This also carry lessons that technical solutions can help save the environment and people do matter in these issues.

the answer is d.) homologous; have mammary glands