Extinct and Endangered Animals

What are extinct animals ?

• Animal species that have not been seen in the wild in the past 50 years

• Animals that are in danger of becoming extinct

What are the reasons for the extinction of plants and animals ?

• Plants and animals become extinct due to many reasons

• Change in habitat, food supplies and different adaptations contribute to the extinction of a species.

• Change in habitat, food supplies and different adaptations contribute to the extinction of a species.

• This happens for any type of organisms if there are only a few remaining of their kind

Tags

NGSS.MS-LS2-4

What are the reasons for the extinction of animals due to human activities ?

• Deforestation

• River pollution leading to increased toxicity of water

• Excessive fishing

• Hunting

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NGSS.MS-ESS3-4

NGSS.MS-LS2-4

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What are fossils ?

• Fossils give clues about the availability of plants and the climate when they lived.

• The word fossil comes from the Latin word fossilis, which means "dug up." Fossils are the remains of ancient animals and plants, traces or impressions of living things from the past. The fossil of a bone doesn't have any bone in it! A fossilized object has the same shape as the original object, but is chemically more like a rock.

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NGSS.MS-LS4-1

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What is the formation of fossils ?

• Most fossils are found in the layers of sedimentary rocks

• Over long periods of time, small pieces of debris of animals and plants are compressed (squeezed) as they get buried under more and more layers of sediment

• Eventually, they are compressed into sedimentary rock

• Fossils are also helpful in showing the missing links between the different species

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What are endangered animals ?

• The species is facing an extremely high risk of becoming extinct very soon

• Animals that are in danger of becoming extinct