They wanted to punish the Persians for attacking grease
Answer:
The correct statment would be: "the hormons of the endocrine system exert their action by lock and key mechanism."
Explanation:
The endoncrine system is responsable of the release of hormons under certain conditions, and in different organs, they go trough the bloodstream. The lock and key mechanism is explained as how the receptors block or release hormonos or instead they don´t. The endocrine system is responsable for the reproductive system, and regulates metabolic processes.
B. the North and South. black people started moving from the rural south to the industrialnirth
C. Women were unable to vote in history, fighting for equality got women the right to vote. It was a big step forward towards equality.
When you have a row of dominoes set up, you knock over the first one, and what happens to the last one is the certainty that the last one will go over very quickly.
That was the U.S. fear about Communism. If one country became communist, the neighboring country would fall to communism just as the dominoes would fall.
