The best cause is erosion creating waves and pushing forward the line where the sand starts
Answer:
the pupil of your eye contracting in the presence of bright light.
Explanation:
The correct answer for your first question is: Dept. of State, which advises the President and is equivalent to the foreign ministry of other countries. It also represents the country in International affairs.
Regarding your second question “the department of state is the lead federal agency and oversees u.s. government coordination and support to a host nation's internal defense and development/coin efforts?” The answer to this question is: yes, that is correct.
Answer:
One can prevent this by moving the eyes away frequently.