National Geographic
National Geographic: Human Impacts on Marine Species
Students learn about three examples of human impacts on marine life: migration patterns and shipping, algal blooms and water chemistry, and marine debris. Some of these impacts are due to human activity in the ocean, and some impacts on...
Discovery Education
Discovery Education: African American Population Shifts
After completing this mini-unit, students will understand some of the economic, educational, and lifestyle reasons why African Americans have moved from one place in the United States to another.