In this lesson, students investigate the controversy surrounding the use of gene-altered crops in food products sold in this country and overseas. Students will explore the economic implications of the use of such crops as well as of the refusal of some c

More than 30 Federal agencies formed a working group in 1997 to make hundreds of Federally supported teaching and learning resources easier to find. The result of that work is the FREE web site. For an overview of what's available here at FREE, please vis

The Railroad maps represent an important historical record, illustrating the growth of travel and settlement as well as the development of industry and agriculture in the United States. They depict the development of cartographic style and technique, high

The Gila Monster seems to prefer an area which is wet enough to support shrub life. They prefer rocky foothills and desert scrub, but also occur in drier, sandier areas; they avoid open land or agricultural areas. They are nocturnal burrowing lizards and

Today the greatest threat to this species is habitat destruction and disruption. Rain forest is rapidly being logged and cleared for agricultural development and mining, leaving only patches of suitable habitat