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5.1 Part 1 Sentence Starters
fossils and evolution
5
Science
7th Grade
04/02/2011

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Cards

Term
fossils
Definition
By studying __, scientists have learned that man species have become extinct, but many new species have appeared.
Term
extinct
Definition
It is estimated that over 99% of all species that ever lived have gone __, and because of pollution and habitat destruction caused by people, one-half of all species of life on earth will be __in 100 years.
Term
evolution
Definition
All species are constantly undergoing the process of __.
Term
theory of evolution
Definition
The __ explains why today’s species are different than their ancestors in both physical makeup and in behavior.
Term
fossil record
Definition
According to the fossil record and the theory of evolution, our closest __ were not too unlike what we are now in physical makeup and in behavior, but our distant ancestors were very different than we are like today.
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