science 2
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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| Geologic time scale | a record of the major events and diversity of life forms in Earth's history
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| Precambrian Era | The first Era in earths. Began with the creation of the Earth 4.6billion years ago. simple life forms, oceans form. no hard skeletons (jellyfish and sea-worms)
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| Paleozoic Era | Early land plants and invertebrates; then fish, arachnids. insects, and ferns. Later amphibians, and reptiles. mass extinction of the marine invertebrates at the end of the Era
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| Mesozoic Era | Retiles are the dominant animal, including dinosaurs. Small mammals and flowering plants appear at the end of the era. Mass extinction of dinosaurs at the end of the era
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| Cenozoic Era | Mammals are the dominant species Diversity of life increases. Flowering plants are most common. Modern humans appear near the end of the era
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| Mass extinction | a widespread and rapid decrease in the biodiversity on earth. an event identified as a sharp sharp in the Diversity and abundance of multicellular organisms
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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:
Neolowery
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