US Department of Agriculture
Agricultural Research Service: Salmonella Uses Chemical to Communicate
This site from the Agricultural Research Service cites a study that has found that Salmonella bacteria release a chemical that directly affects the growth of microorganisms. (January 27, 2000)
Michigan State University
Michigan State University: Digital Learning Center for Microbial Ecology: Microbe Zoo: Ag Acres
A simple overview of the important roles microbes play in agriculture. You'll learn how some microbes can be hazardous to plants while others help fertilize and build soil, and kill insects.
McGraw Hill
Mc Graw Hill: Colonial Economy and Patterns of Society
Although tied to pages from a specific text, these AP study questions allow anyone to consider aspects of colonial economics. (Answers to some of the questions are located at the following link:...
CommonLit
Common Lit: Text Sets: Workers' Rights
As America grew, so did its production of agriculture and manufacturing, leading to a rise in workers and their demands. Study the history of worker's rights in America from the Industrial Revolution to today. This collection includes 13...
Wikimedia
Wikipedia: Economy of Costa Rica
Excellent resource for studying about the economy, resources, infrastructure, exports, and jobs in Costa Rica.
Other
Science Magazine: Reading the Signs of Ancient Animal Domestication
An article which discusses the size of the first animals domesticated by humans about 10,000 years ago. The author reviewed a study in which it was suggested that size reduction evidence may not be the first sign of domestication....
My Science Site
Water Works! One Resource Many Users [Pdf]
This resource takes a closer look at water withdrawal and instream use in Canada and compares it to other countries. Incorporates subject areas such as science, social studies, language arts, history, geography, math and environmental...
TeachEngineering
Teach Engineering: Bees Are Master Pollinators
The study of biomimicry and sustainable design promises great benefits in design application. It affords means by which to promote cost-effective, resourceful, non-polluting avenues for new enterprise. These "blueprints" have existed...
Other
Cincinnati Arts Association: E Kaa Bo [Pdf]
E Kaa Bo, the Nigerian word for "welcome," provides the introduction to this study guide in pdf format which explores Nigeria. The guide focuses on the land and climate, agriculture, economic history, rivers, languages, currency, and more.
Northern Arizona University
Nau: Moche Foodways Archaeological Project, 1997 2000
This project studied the "prehistoric food systems" of the Moche people in order to further understanding of the civilization and its innovations. Learn about the farming advances, eating habits, and daily life of these ancient people of...
AllRefer
All refer.com: East Germany: Economy
Breaks down East German economy from 1984 into eight categories: Gross National Product (GNP), energy and mining, industry, agriculture, foreign trade, balance of trade, exchange rate, and fiscal policy. Each category contains a succinct...