The carbon-14 isotope disintegrates radioactively with a half-life of ________ years.
A. 15 billion
B. 4.5 billion
C. 710 million
D. 5730
E. 24,000
Answer: D
You might also like to view...
What provides the raw material for large and complex food webs within an estuary?
a. The ocean bringing in nutrients b. Salt-tolerant plants producing carbohydrates c. Salt-tolerant plants being decomposed d. The river depositing nutrient-rich sediments
Why do volcanic eruptions cause cooling for the weeks/months following the eruption?
A) increased sulfur in the atmosphere reflect energy from the sun B) volcanic ash acts as a shield to block the sun's energy from reaching earth C) carbon dioxide is emitted during the eruption D) both A and B
A relatively small group that has broken away from an established church is a
A) branch. B) denomination. C) sect. D) dialect. E) family.
Where is Lake Maracaibo located?
A) Venezuela B) Mexico C) Peru D) Bolivia E) Brazil