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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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juicymae92 juicymae92
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6 years ago
The earliest evidence of life on Earth is over 3 billion years old. Indicate whether the statement is true or false.


Q. 2 -

Dates on zircons from Western Australia suggest that the oldest crustal rocks are more than 4 billion
  years old. Indicate whether the statement is true or false.




Q. 3 - In five half-lives, one-sixteenth of a radioactive substance will remain. Indicate whether the statement is true or false.


Q. 4 -

Rock layers containing extensive fossils of organisms with hard parts represent only about 12 of
  geologic time. Indicate whether the statement is true or false.




Q. 5 -

Relative age dating enables scientists to determine the age in years of a rock mass, whereas absolute
  age dating can only determine the sequence of events. Indicate whether the statement is true or false.
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wertywerty
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6 years ago
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juicymae92 Author
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#2
6 years ago
I wish all teachers could be as helpful as you instead of making us do things the complicated way...
wrote...
#3
6 years ago
It really depends on the course, never give up
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