Back in Stock
Best of the Best
SCIENCE & MATH
MIDI & Sound
Ages: 13 to adult
See How Plants and Animals Depend on Each Other for Survival
Discover the delicate balances within the Earth's ecosystems. What are primary consumers? Through what process do green plants convert light energy to food energy? What is the term for all the living material within an ecosystem? This title presents the basic principles of an ecosystem's trophic structures and functions, including food chains and webs, trophic levels, and the functional relationships between them. You'll study the flow of energy through an ecosystem and examine material cycles and the principles influencing the movement of material through an ecosystem.
View over 450 images, many full screen
Hear 45+ minutes of self-playing presentations
Print out images in full color or save to your clipboard
Includes a dictionary and concise encyclopedia on the disc
Learn more with 100 interactive questions & answers
Requirements: Windows - 486DX/25 with Windows 3.1 or higher, 8 MB RAM (16 MB recommended for Windows 95), CD-ROM drive (double speed or greater recommended), 640x480 VGA (SVGA, 256 colors recommended), mouse and sound card recommended.
Requirements: MAC - 33MHz 68030+ Macintosh, System 7+, 8 MB RAM (6MB free RAM required), CD-ROM drive (double speed or greater recommended), 640x480 color monitor (256 colors recommended), mouse and sound card recommended.
Access. All rights for original work reserved.