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ransom 6&7th ch 8/9
question | answer |
---|---|
Scientists can determine the age of a fossil by looking at its __________ | atoms |
Scientists think that there was a big landmass called ____________ | Pangaea |
How can scientists tell how old a fossil is? | absolute dating |
Who studies the past? | paleontologists |
When a plant or animal dies out completely and does not reappear, it is... | extinct |
What are the three reasons scientists believe in Pangaea? | continents; fossils; glaciers; describe these three things |
The Mesozoic era was the | 3rd era |
We have the most fossils from what era? | Cenozoic |
What damages DNA? | UV radiation |
What were the first cells called? | anaerobic |
How did hominids start to look like humans and get human features? | We evolved over time. From mice first, then lemurs, Lucy, australopithecines, Homo Habilis, Homo erectus, Neanderthals, Cro-Magnons and finally people. |
What human like characteristics of humans do Neanderthals carry? | wore clothes, made fires to keep warm, buried their dead |
Lucy's upright posture evolved before her _________ | enlarged brains |
Hominids are humans' | ancestors |
Bipedal means to | walk on 2 legs |
Cro-Magons were like humans but with | bigger heads, heavier, stronger bones, smaller teeth or bigger brain |
Why do we classify? | We classify to specify exactly what organisms are. |
Why do we use taxonomy? | to place organisms in their classification |
A brown bear is more closely related to a platypus or a lion? | lion |
The first classification is kingdom or family? | kingdom |
How many kingdoms of bacteria are there? | two |
What kingdom has both plant and animal like characteristics? | protista |
List the kingdoms | plantae, protista, fungi, animalia, archaebacteria, eubacteris |
The prefix archar comes from the Greek meaning | ancient |
A giant sequoia can grow how tall? | 91.5 meters |