Disappearing Organisms Indicator 3.4.5 Give examples of some kinds of organisms that have completely disappeared and explain how these organisms were similar to some organisms living today. Taken from http://dc.doe.in.gov/Standards/AcademicStandards/StandardSearch.aspx
Definitions Organism: a living thing like a person, plant, or animal. Extinct: no longer living or existing. Grasslands: a large area covered in grasses and small plants. Compare: to find likeness between two (or more) things. Contrast: to show how two (or more) things are not alike. Domesticated: Tamed, like pets.
Why Extinct? Different animals can become extinct (die out) for different reasons. For example the Moa Bird is believed to become extinct because it was hunted too much. The hunters didn’t leave enough of the birds to reproduce. No one can tell for sure why all the dinosaurs are extinct, but some people think it’s because an astroid hit the earth and killed them all. Some believe that there was a really long, cold period of time call an ice age that killed the dinosaurs because they froze to death.
Why Extinct? Continued Plants and animals have become extinct because their habitat (where they live) is destroyed. Sometimes its destroyed by nature like a flood or forest fire. Sometimes habitats are destroyed by humans, when we build new parts of town, or pollute bodies of water. Sometimes plants and animals become extinct when what they eat becomes extinct. If they can’t eat they die.
Compare and Contrast Plesiosaurus Eats fish and squid. Has a small head, but very large teeth and mouth. A soft unprotected body Up to 8 feet long Extinct Snapping Turtle
Eats small fish and other water animals like cray fish
Compare and Contrast Moa Bird Did not have wings Were around 12 feet tall Ate plants Took many years to grow to adult size. Extinct Emu Are between 6 and 7 feet tall Eats plants and insects Can run up to 50mph Cannot fly even though they have wings Full grown by 14 months Not extinct
Compare and Contrast Macrauchenia (extinct) Had three toed feet Ate plants Could be ten feet long Nostrils were located between it’s eyes. Camel Have even numbers of toes Are plant eaters Have humps made of fatty deposits. Not extinct
Why Extinct? Pick one of the extinct animals from the previous slides and write a story about why that animal is now extinct. Use your imagination! _________________________________________________________________________________________________________________________________________________________________________________________
Compare and Contrast: YOUR TURN For the next two slides the first section will have a photo and information on an extinct animal. YOUR JOB is to fill in the second half of the slide with an animal that still exists that reminds you of the extinct animal. Draw a picture and list details about why the two animals are both similar and different.
Compare and Contrast: YOUR TURN Quagga Was a type of hoofed zebra Lived in the grasslands of Africa Liked being around other Quagga Ate plants and grass Had a mane that stood up Living Animal:_______________ Similarities:___________________________________________________________ Differences:___________________________________________________________ Picture:
Compare and Contrast: YOUR TURN! Aurochs Were over 6 ft tall Could be domesticated Ate plants, grass and grains Males had horns and females did not Living Animal:____________ Similarities:___________________________________________________________ Differences:___________________________________________________________ Picture:
Art Time! Use the space below to draw at least one of your favorite extinct animals, and at least on of your favorite animals that are still living.