One fourth means (one half) of (one half) .
So the 18 months must be two half-lifes.
The half-life of this particular isotope is 9 months.
<span>The answer is Monarch butterflies migrating southward. This describes the innate animal behavior, </span>Monarch Butterflies perform one of the longest migration known in insects. Starting from North America, they spend their summer in North America, and migrate south to Mexico for the winter.<span>
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Creative Biolabs can provide various custom BsAbs in the format of CrossMab.
https://www.creative-biolabs.com/bsab/category/crossmab-31.htm
Answer: The answer is D.
Explanation: Because earthquakes take place in both the Convergent Plate in Location A and Transform Plate in Location B.
Plant uses sun energy to convert the carbondiode into energy