Worksheet – Planet Earth “Great Plains” Video

Name ____________________________________ Period ____ Date ________________________
Worksheet – Planet Earth “Great Plains” Video
1. In what biome is there the greatest gathering of large wildlife herds? Why?
2. What percentage of Earth’s land area is covered in grass?
3. What climate conditions create grasslands?
4. Why do Mongolian Gazelle come together each year is one area?
5. What “disaster” occurs frequently on grasslands?
6. Why do grass plants grow back quickly after a fire?
7. What plant type feeds more wildlife than any other?
8. What parts of grass plants do most birds eat? Which part do humans eat?
9. Why is grass the main plant type in the arctic tundra?
10. What distance do snow geese migrate each year? Where do they spend their winters and
summers? How long does the migration take? Why do they migrate? What do they eat?
11. How do arctic foxes rely on the snow geese migration?

12. What is the main food source for wolves that live in the arctic tundra?
13. How long is the arctic tundra caribou migration each summer?
14. How many bison once lived in North America, before human hunters almost killed them off?
How many bison remained when the over-hunting was finally stopped? What actions helped
the bison population to recover?
15. How do bison and other grassland herd animals decide who the dominant mating male will be?
How does this affect the process of natural selection in grazing animal populations?
16. What large grazing animal lives at the highest elevations on Earth?
17. How does grass survive in very harsh, dry conditions?
18. What are picas? What do they eat? What predators eat pica?
19. Where are the tallest grasses on Earth found? Why? How tall do they get?
20. Why do southern African elephants migrate?