Desert

  • After reading the Southwestern United States Investi-gator, test your knowledge with a crossword puzzle.
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    Crossword – Southwestern United States Investi-gator

  • A forest is a natural ecosystem composed most notably of trees. Different types of forests are found across the planet.…
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    Inquiry 1: What Kinds of Forests Grow on Earth and Where Are They Found?

  • Most scientists think that evidence from different studies shows that our global climate is changing in many ways, such as…
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    Where in the World Is Carbon Dioxide? The Potential Impact of Rising Levels of Carbon Dioxide on U.S. Forests (Spanish)

  • Most scientists think that evidence from different studies shows that our global climate is changing in many ways, such as…
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    Where in the World Is Carbon Dioxide? The Potential Impact of Rising Levels of Carbon Dioxide on U.S. Forests

  • There are many different types of plant communities in the United States. What will happen if the climate continues to…
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    Where in the World Is Carbon Dioxide? Climate Change Monograph Series Vol. 1 No. 4