A local environmental group has less volunteers than the national group which means less help, but it helps to get more actual spending funds
a national group has many volunteers from around the country, but funds are usually to low to actually pay for the cause since most of it was used to pay f associations
PRO- A pro for a local group would be that you can clean up your own community and notice the difference and also it is close so you won't have to travel a billion miles.
CON- A con for a local group is that you can only help the community and since a community could be small, based on my own, it wouldn't take a long time to do the service if there were a decent amount of people.
National:
PRO- You would be able to help outside of your community and you could meet some new people.
CON- A con for a national group would be that it could be far to travel and you would probably have to do research on the service and where it is before going.
Waterways were among humanities first major transport routes. Whereas oceans acted as barriers in ancient times, in modern times they have been highways of travel and trade.