A. Emperor Alexander Severus, who was assassinated by his troops after a defeat.
B. Roman Senade, which accepted some army generals as legitimate emperors.
C. Security of the border, which they were supposed to keep. While the were fighting among themselves, they neglected the defenses of the Emprire, resulting in invasions.
D. Crisis, which ended with the Reforms made by Diocletian.
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:
volume the pattern of spacing among in
Explanation:
Population dispersion may be defined as the different pattern of spacing of the population existed in one place.
It shows the various patterns or ways in which people are placed at different location at a certain locality.
Population dispersion also known as distribution pattern explains the occupying space of the members of the populations is related within a habitat.
Thus the answer is volume the pattern of spacing among in.
they had all kinds british ETC.......................................
Voters elect members of the legislative branch.
