History of Life on Earth
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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| evolution | change over time
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| radiometric dating | estimation of the age of an object by using certain chemicals (half life)
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| 4.5 billion years ago | How old is Earth?
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| prokaryote | simple cell, single cell (unicellular), no nucleus
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| eukaryote | complex cell, single or multicellular, has a nucleus
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| cyanobacteria | through photosynthesis, they added oxygen into the water and air, making the atmosphere right for land organisms
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| 6 Kingdoms | 1 eubacteria (common bacteria) 2 archaebacteria (extreme bacteria) 3 protists 4 fungi 5 plants 6 animals
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| multicellular | 2 or more cells, allowed for specialization of cells (each cell has its own job)
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| extinction | death of all members of a species
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| ozone layer | protects Earth from the harmful UV rays of the sun, allowed life to move onto land
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| Eras of life on Earth | (Precambrium time), Paleozoic Era, Mesozoic Era, Cenozoic Era
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| fossil | the remains of a living organism, can be dated by radiometric dating
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| mutualism | relationship between 2 species in which both species benefit (mycorrhizae is an example)
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| mycorrhizae | a relationship between fungi and plants, plants receive minerals from the fungi and fungi receive food from the plants
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| arthropods | 1st species on land, they have an exoskeleton (outer), they are invertebrates (no backbone), they include lobsters, crabs, insects and spiders
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| vertebrates | they have a backbone (endoskeleton)
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| amphibians | they can live in water and land, eggs are laid in water, they include frogs, toads and salamanders
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| reptiles | live on land, 1st to lay eggs on land, they include snakes, lizards, turtles and crocodiles
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| mammals | they have hair, feed their young with milk, live birth (humans)
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| continental drift | movement of land masses over Earth's surface (Pangea)
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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:
jyoung271
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