60 years is three half life for the substance, so 40*1/2^3=5
Answer:
These are found in the <em>submucosal</em><em> </em><em>plexus</em>
Explanation:
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The answer is D! birds have to migrate for winter to find an abundance of food! they learned this over time making it a learned adaptation
Answer:
When a leaf is placed in a solution whose salt concentration is higher than the salt concentration of the leaves, the water with in the leaves shall move out of the leaves due to the osmotic pressure gradient. This will cause the plant cell devoid of water thereby leading them to shrink and wilt.
Explanation:
Hello there.
<span>Regulation of the cell cycle is dependent upon cyclins and cyclin-dependent kinases. The key(s) that allows a cell to progress beyond the restriction point is (are)
</span><span>c. cyclin A and Cdk2.
</span>
