Flora and fauna are diverse. Some flora and fauna adapt to a single climate condition and can't be exposed to other climate condition because it will not survive. Flora grow where the climate conditions allow it and won't grow in a different climate condition.
Junta Because well that is the awnser there is no need to explain because is it a multiple choice question
Answer:
Yes, because there is diversity and decentralisation of power.
Explanation: The American society is a Democratic society which is made of different tiers and arm of Government which has different Power features.
Decentralisation of power is the process of Distribution of power both vertically(tiers of Government) and horizontally (arms of Government) with each having its own power as prescribed by the constitution.
DIVERSITY OF POWER IS A TERM THAT DISCRIBES THE DIFFERENT TYPES OF POWER AVAILABLE IT INCLUDES THE POWER TO MAKE LAWS(LEGISLATURE), THE POWER TO ENFORCE LAWS(EXECUTIVE) AND THE POWER TO INTERPRET LAWS(JUDICIARY) ETC.
Early humans traveled over the land bridge Beringia which allowed them to populate the Americas.