mayor - n. an official who is elected to be the head of the government of a city or town

basis - n. something (such as an idea or set of ideas) from which another thing develops or can develop

indigenous - adj. produced, living, or existing naturally in a particular region or environment

distraction - n. something that makes it difficult to think or pay attention

ecological - adj. related to a science that deals with the relationships between groups of living things and their environments

advocacy - n. the act or process of supporting a cause or proposal : the act or process of advocating something

ecosystem - n. everything that exists in a particular environment