An excess production of melanin. Melanin is a pick me to give skin its color.
<span>The condition of intelligence test have become a kind of narrow validation for today's children and making the intelligence a limited resource. These tests have reduced taste by limiting the reliance on teachers who are biased to the student's academic achievements. But intelligence should be some that is learned for experience.</span>
The right answer is Half-life.
Half-life is the time taken by a substance (molecule, drug or other) to lose half of its pharmacological or physiological activity. Used by extension in the field of radioactivity, the half-life, also called radioactive half-life, is the time at which half of the radioactive nuclei of a source have disintegrated.
<span>The term half-life is often misinterpreted: two half-lives do not correspond to the full life of the product. The half-life is in fact the median of the life of a product, that is to say the duration below which there remains more than 50% of the product, and beyond which there remains less than 50%.</span>
Answer:
In the last 50 years or so of the Ming Dyansties, the emperor simply lacked the necessary resources and man power to sustain large amounts of trade, causing China to become isolated from the world.
Explanation: