secular – adj. not overtly or specifically religious
evolution – n. the process by which changes in plants and animals happen over time
naturalist – n. a person who studies plants and animals as they live in nature
curriculum -- n. the courses that are taught by a school, college, etc.
fundamental – adj. forming or relating to the most important part of something
controversial – adj. relating to or causing much discussion, disagreement, or argument: likely to produce controversy
theologian -- n. a person who is an expert on theology