Problem: Many laws have been passed in an effort to improve health and welfare of people. Some of these laws were passed in the 1800s requiring sanitary sewers, which ended cholera outbreaks and other epidemics that had killed millions. How did the scientific knowledge of cholera and sewers when these were passed compare to the scientific knowledge of causes of climate change now? Group of answer choices Then, knowledge of causes of cholera was much better than modern knowledge of causes of climate change Then, knowledge of causes of cholera was about as good as modern knowledge of causes of climate change Then, knowledge of causes of cholera was perfect, just as now knowledge of causes of climate change is perfect Then, knowledge of causes of cholera was not as good as modern knowledge of causes of climate change. Then, there was no knowledge of causes of cholera, just as now there is no knowledge of causes of climate change. Need Assignment Help?