2 cm/year should be right
The clocks change twice each year to accommodate Daylight Saving Time. In the U.S., this time period begins on the second Sunday in March and ends on the first Sunday in November. Clocks move forward one hour in March and move backward one hour in November. (I assume you're talking about the daylight savings change? Feel free to correct me if i'm wrong)
Answer: tight junction; desmosomes
Explanation: Tight junctions are connected areas of the plasma. They form a water tight seal and acts as barrier against the movement of water, solute and prevents passage of materials between the cells or epithelial layers.
Desmosomes forms a strong connection that joins intermediate filament of adjacent cells, they can be viewed as rivets through the plasma membranes of adjacent cells.
Affirmative Action is a program designed to help further employment of groups of people who have once been discriminated against in the past. The thought of it being successful is highly debatable and I encourage you to look it up for yourself and draw that conclusion. I will not tell you what you should think, you should be a free thinker and look up statistics and facts to help guide you to your conclusions.