Answer:
D. guard cells.. this is answer i think..
House sparrows in the northern part of North America are larger than those found in the southern regions. The possible mechanism of microevolution is more likely to be responsible for this is natural selection. The answer would be letter B.
Answer:
The power is too centralized within a small group and gives them too much power. Leading to tyranny.
Explanation:
In an oligarchy, the power is divided between a small group of higher-ups and it can easily transform into a tyranny when one person becomes too influential.
