Describe the basic mechanics of implementing a poison pill

Question

In fewer than 150 words per item answer or address the following questions:

Please use example if necessary.

1. Describe the basic mechanics of implementing a Poison Pill antitakeover measure.
2. Explain the benefits of a Poison Pill provision.
3. Explain why Poison Pills provisions often result in reduced Stockholder wealth.
4. Why has the use of Poison Pills declined so much since the year 2000.