The angle of jaw and type of teeth in each jaw are the main big differences.
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D) Sea otters are a keystone species as they prevent a herbivorous species from completely destroying a plant species.
Explanation:
Answer:
your answer would be C.Streak is tested by scraping a mineral across a streak plate.
Explanation:
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Answer:
Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.
