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.
Answer:
Explanation:
Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest, it affects how you feel.
Stress, either physiological, biological, is an organism's response to a stressor such as an environmental condition.
Answer:
The Vikings of Norway are the first Europeans known to have visited North America (u.s.)
