Science
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| A group of land ecosystems with similar climates and organisms. | biome
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| When tall trees form a leafy roof in the rain forest. | canopy
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| Formed below the canopy, a second layer of shorter trees and vines. | understory
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| An area that receives less than 25 centimeters of rain per year. | desert
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| An area that is populated mostly by grasses and other nonwoody plants and receives 25 to 75 centimeters of rain each year. | grassland
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| An area where scattered shrub, small trees, and grasses grow and receives as much as 120 centimeters of rain each year. | savanna
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| Trees that shed their leaves and grow new ones each year. | deciduous tree
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| Trees that produce their seeds in cones and have leaves shaped like needles. | coniferous tree
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| An area of land that is extremely cold and dry. These areas may receive no more precipitaion than a desert, but most of the soil is frozen all year. | tundra
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| The frozen soil in a tundra. | permafrost
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| A body of water where the fresh water of a river meets the salt water of the ocean. Many marine animals use this are as breeding grounds. | estuary
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| An area along the rocky shoreline, between the highest high-tide, and the lowest low-tide. | intertidal zone
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| A region of shallow water in an area where the edge of a continent extends into the ocean for a short distance, life a shelf, below the low-tide line. | neritic zone
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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jafranko
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