Land is considered a resource because it
•is always available to use
•is used to produce things
•costs ttle or nothing to use
•requires labor to be useful

Which examples are relevant sources for students to use in research? check all that apply. a journal entry written by a professor who is considered an expert a report written by an independent government source a presentation by a company that includes paid information a document published by a renowned organization a scientific paper put out by a non-profit organization a blog whose author tries to sell a product or service