The nervous system and cardiovascular system
When you say community development, it refers tor process that is being done or implemented by a certain community group. They come together and generate ideas that are helpful to the community.
When you say community organization, they are the people that unites to be able to create a development within their community.
A tonsillectomy is a procedure to treat infection, and inflammation of the tonsils. This could be the first sentence :)
The term that describes an illness that affects the mind and reduces a person's ability to function, adjust to change, and get along with others is called, "Mental Disorder".