I have no idea but almost all these
answers are all wrong the ones that they give
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.
This idk but i have a friend who might know it thou
Answer:
Its members have two-year terms, with the entirety of its members facing re-election every two years.
Explanation:
Just Took the test
They traveled over the ice bridge from modern day Russia to modern day Alaska, and migrated from there some 10-11 thousand years ago is what is what is commonly accepted today.