does methane have anything to do with ozone depletion?

http://www.ciesin.columbia.edu/docs/011-466/011-466.html

What Drainage basin does Michigan belong to?

I have answered this one a couple of times already. Can I direct you to the statement in the conclusion in DrBob's article. "Indeed, the conclusion of the 1991 International Scientific Assessment was that 'the weight of evidence suggests that the observed middle- and high-latitude ozone losses are largely due to chlorine and bromine'"

Yes, methane does have a contribution to ozone depletion, although it is not the primary culprit. Ozone depletion is primarily caused by the release of chlorofluorocarbons (CFCs) and halogenated hydrocarbons, which contain chlorine and bromine atoms. These chemicals, when released into the atmosphere, can break down ozone molecules in the stratosphere.

While methane itself does not directly destroy ozone, it indirectly contributes to ozone depletion through chemical reactions. Methane is a greenhouse gas, and its emissions enhance the greenhouse effect, leading to warmer temperatures in the troposphere. This increase in temperature can accelerate the destruction of ozone because certain chemical reactions that convert chlorine compounds into active ozone-depleting substances become more efficient at higher temperatures.

It is important to note that the primary sources of methane emissions are related to human activities such as agriculture, fossil fuel production, and waste management, rather than ozone-depleting substances.

Regarding your second question about the drainage basin that Michigan belongs to, I apologize for not having a previous answer on record. To determine the drainage basin, we can look at a map or use online resources that provide information about the watershed boundaries.

If you have access to a map, you can identify the major rivers and locate Michigan within their basin. Michigan is primarily located within the Great Lakes Basin, which is one of the largest freshwater drainage basins in the world. The state is bordered by four of the five Great Lakes: Lake Superior, Lake Michigan, Lake Huron, and Lake Erie. The water from these lakes, along with their tributaries and connecting rivers, drains into the Atlantic Ocean through the St. Lawrence River.

Another way to find this information is by using online resources such as the United States Geological Survey (USGS) or the Environmental Protection Agency (EPA) websites. These websites often provide detailed information about drainage basins and watersheds.