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What can scientists learn from the rate at which radioactive elements decay? A. a rock's absolute age* B. the relative age of r...Asked by Anonymous
What can scientists learn from the rate at which radioactive elements decay?
A. a rock's absolute age*
B. the relative age of rock layers
C. where one soil horizon ends and the next begins
D. the difference between molds and casts.
After six half-lives, what percentage of a radioactive sample will remain?
A. 0%-1%
B. 1%-3%*
C. 3%-6%
D. 6%-10%
Earth's oceans, atmosphere, and continents began to form during the first several hundred years of Precambrian time.
A. True*
B. False
A mold forms when minerals replace all or part of an organism.
A. True
B. False*
A. a rock's absolute age*
B. the relative age of rock layers
C. where one soil horizon ends and the next begins
D. the difference between molds and casts.
After six half-lives, what percentage of a radioactive sample will remain?
A. 0%-1%
B. 1%-3%*
C. 3%-6%
D. 6%-10%
Earth's oceans, atmosphere, and continents began to form during the first several hundred years of Precambrian time.
A. True*
B. False
A mold forms when minerals replace all or part of an organism.
A. True
B. False*
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