D. Oxygen and metal
They usually contain some form of metallic cation, given that carbonates are the most distributed minerals in the Earth's crust.
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Answer:
Explanation: The first Australopithecus fossil was found in a lime quarry at Tuang, it was found by Raymond Dart in November 1924.
1 hour I think.. correct me if im wrong <3
Observation designed to minimize the effects of variables other than the independent variable.
