This series of activities will help you build up some vocabulary.
Part A -- Pre-Quiz.
Click here to check you know the words you will need to do the exercises in Part B.
Part B
Below you will find 3 short paragraphs that include incomplete words. Please type the complete word in the space provided below.
1. First read about the effects of climate change.
Climate Change Blamed for Pleistocene Megafauna Bust and Boom
Around 13,000 years ago, the world's climate began to change. Seas rose, glaciers retr.......... (1) and ecosystems began to transform. At rou.......... (2) the same time, humans arrived in North America, perhaps attracted by migrating ga.......... (3) or newly hospitable land. Over the course of the next few millennia a host of indigenous large-bo.......... (4) mammals, such as the mammoth, died out. Scientists have long debated whether climate warming or human hunting brought ab.......... (5) this megafauna extinction. New radiocarbon dating results support the environmental expl.......... (6).
2. Now read about how wild life has been restored in Iraki marshes.
Please type the complete word in the space provided below.
Wildlife Restored to Iraqi Marshes
In the 1990s the Garden of Eden was destroyed. The fertile wet.......... (1) between the Tigris and Euphrates rivers were di.......... (2) and dra.......... (3), turning most of 15,000 square kilometers of marsh to desert. By the year 2000, less than 10 percent of that swam.......... (4)--nearly twice as big as Florida's Everglades--remained. But reflo.......... (5) of some areas since 2003 has produced wh.......... (6)some scientists are calling the "miracle of the Mesopotamian marshes"--a return of plants, aquatic life and even rare birds to their ancestral home.
3. Finally learn all about a magic box...
Please type the complete word in the space provided below.
What do you get when you put polluted water, fossil-fuel exha.......... (1), sunlight and heat-lov.......... (2) green slime into a metal box? If the box belongs to David Bayless, you get pure oxygen, clean water and a potential mea.......... (3) to remove greenhouse gases from the atmosphere. Bayless, director of Ohio University's Ohio Coal Research Center, thinks that the easiest way to eliminate the carbon dioxide gi.......... (4) off by coal-burning power pla.......... (5) is nature's way, through photosynthesis. But industrial quantities of CO2 need industrial amo.......... (6) of photosynthesis. So, with the help of a Department of Energy grant, Bayless came up wi.......... (7) a scal.......... (8) box packed with photosynthesizing cyanobacteria (blue-green algae).