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http://rjfisherjoanides.pbworks.com/f/1299777618/a151-mammals_poster%282%29.jpg. Section 9 The Age of Mammals. What do scientists believe were the first type of mammals? - rodent-sized animals that evolved in the shadow of dinosaurs during the Jurassic and Triassic periods.

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  1. http://rjfisherjoanides.pbworks.com/f/1299777618/a151-mammals_poster%282%29.jpghttp://rjfisherjoanides.pbworks.com/f/1299777618/a151-mammals_poster%282%29.jpg Section 9 The Age of Mammals

  2. What do scientists believe were • the first type of mammals? • -rodent-sized animals that evolved in the shadow of dinosaurs during the Jurassic and Triassic periods. 75. What event allowed for mammals to radiate widely? The extinction of dinosaurs. They no longer were there as predators and competitors. http://www.myninjaplease.com/wp-content/uploads/extinction-of-dinosaurs.jpg

  3. What types of mammals appeared within about 10 million years after dinosaurs died out? • Most of the modern mammal orders, from • batsto large types like primatesandwhales • Whatcharacteristic helped mammals • to populate a wide range ofenvironments? The fact that mammals could maintain a relatively constant internal temperature in hot or cold environments, they were able to adapt to temperature changes more readily than cold-blooded animals http://images.nationalgeographic.com/wpf/media-live/photos/000/089/cache/mammal-evolution_8984_600x450.jpg

  4. What is an angiosperm and what advantages enabled them to spread into more diverse habitats than earlier types of plants? An angiosperm is a flowering plant. *Advantages included seeds enclosed within a structure (the flower) that protected developing embryos. *Their flower petals and fruits attracted animals, birds, and insects that helped plants spread by redistributing pollen and seeds. http://esciencenews.com/files/images/201003152773350.jpg

  5. 79. Explain the effect of the breakup of Gondwanaland, a supercontinent, on the Earth’s climate? Climates became dryer, with grasslands and arid habitat spreading into many regions that previously had been forested. http://www.thewire.org.au/StoryImages/grassland.jpg

  6. The modern human species, Homo sapiens, is believed by some scientists to have evolved in Africa about 200,000 years ago. • What do some scientists believed brought • man out of Africa and into others parts of • the world? Man gradually migrated outward from Africa, following dry land migration routes that were exposed as sea levels fell during glacial expansions. http://revistaombligo.com/wp-content/uploads/2012/09/Homo-sapiens-internet.jpg

  7. http://www.bing.com/videos/search?q=homo+sapiens+migration+out+of+africa&qs=SC&sk=SC3&FORM=QBVR&pq=homo%20sapiens%20migraion&sc=4-21&sp=4&qs=SC&sk=SC3#view=detail&mid=EA5D2E7606518E8BDA7EEA5D2E7606518E8BDA7Ehttp://www.bing.com/videos/search?q=homo+sapiens+migration+out+of+africa&qs=SC&sk=SC3&FORM=QBVR&pq=homo%20sapiens%20migraion&sc=4-21&sp=4&qs=SC&sk=SC3#view=detail&mid=EA5D2E7606518E8BDA7EEA5D2E7606518E8BDA7E 82. By about 40,000 years ago Homo sapienshad settled Europe, and around 10,000years ago man reached North America. http://upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Spreading_homo_sapiens.jpg/300px-Spreading_homo_sapiens.jpg

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