Which of the following is an example of how a new species can develop in nature?
|A)||A scientist in a laboratory develops a new species.|
|B)||Two different species develop in such a way that they look the same.|
|C)||A dog breeder makes a new breed of dog that looks different from all the others.|
|D)||A group becomes separated and they evolve until they cannot interbreed with the original population.|
The longest section of Earth's history was __________.
What types of animals dominate the Cenozoic Era?
Which of the following is an example of Darwin's theory of evolution by natural selection?
|A)||Insects that blend into trees survive because they are not seen, and thus not eaten, by birds.|
|B)||Native Americans do not kill an albino animal because it is thought to be bad luck.|
|C)||A breeder of cats specifically chooses cats to breed that have long, white fur.|
|D)||Giraffes that stretch their necks have necks that grow longer.|
A German shepherd and a Chihuahua look different, but they can interbreed. They are __________.
|A)||products of natural selection|
|B)||proof for evolution|
|C)||from different species|
|D)||from the same species|
Which of the following is NOT a description of the current view of dinosaurs?
|D)||nurturing their young|
Why is the Precambrian fossil record so sparse?
|A)||Vertebrates developed then.|
|B)||All organisms lived on land.|
|C)||Many of the organisms had soft bodies.|
|D)||There were no living things.|
What occurs at the end of a geologic era?
|A)||a mountain-building event|
|C)||a comet hitting Earth|
The Appalachian Mountains, an old mountain range, was formed during what era?
Two organisms look alike but they do not interbreed naturally. They are __________.
|A)||from the same species|
|C)||from different species|
What is an example of an index fossil?
What does the name trilobite mean?
What was Pangaea?
|A)||the original name for North America|
|B)||a large, single landmass|
|C)||a type of trilobite|
|D)||a geologic era|
How did trilobite eyes develop?
|A)||They developed the same way for all species.|
|B)||They all developed without eyes.|
|C)||They developed into many different forms over millions of years.|
|D)||They all had complex eye structures.|
What is NOT a characteristic of mammals?
|B)||hair or fur|
|D)||produce milk to feed young|
What are Ediacara life-forms?
|B)||unique organisms that went extinct|
|C)||direct ancestors of Cambrian life-forms|
|D)||no one knows for sure|
Order the divisions of geologic time from the longest to the shortest.
|A)||eons, epochs, eras, periods|
|B)||eons, eras, periods, epochs|
|C)||periods, epochs, eras, eons|
|D)||epochs, periods, eras, eons|
Where did the oxygen in Earth's atmosphere come from originally?
How can plate tectonics contribute to evolution?
|A)||Volcanic eruptions can cause species to become extinct.|
|B)||The movement of plates forces some animals underground.|
|C)||Separating plates can divide groups of a population|
|D)||Radiation from plate tectonics can cause genetic change.|
During the first billion years of Earth's history, ___________.
|C)||there was life everywhere|
|D)||there was no life|