Biology, 26.04.2021 20:50 santana647
Why are isotopes with short half-lives not useful for dating very old rocks?
-because not enough of the parent isotope remains to measure accurately
-because not enough of the daughter product has formed to be detectable
-because neither the parent isotope nor the daughter product will be detectable
-because very old rocks would never have contained these isotopes
Answers: 2
Biology, 22.06.2019 07:00
An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?
Answers: 3
Biology, 22.06.2019 10:30
The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere
Answers: 1
Biology, 22.06.2019 12:00
Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?
Answers: 2
Biology, 22.06.2019 19:50
What happens to the amount of waste in the pond as the ecosystem ages?
Answers: 3
Why are isotopes with short half-lives not useful for dating very old rocks?
-because not enough o...
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