key terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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two reasons extinction occurs | destruction of habitat and introduction of new species
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evolution | change in species over time
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extinction | when the last individual of species dies
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natural selection | organisms that are better adapted to an environment survive and reproduce at a greater rate than organisms that are not
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mutation | process in which DNA changes result in new alleles
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adaptative radiation | production of several species from one ancestoral species
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nonliving environmental factors | temperature, rainfall, pollution, fire, flooding, elevation, volcano eruption
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living environmental factors | predators, available food, population of species
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Darwin's hypothesis of why there are so many living things of Earth | different, long term environmental influences on populations produced the variety of species
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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.
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.
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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Created by:
tracy.leake
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