Religious and ethnical problems.
It was one of the largest empires of the world with many different ethnicities. The problem was to unite people under one rule.
Another problem was communication. It was hard to transfer knowledge and news to all parts of the empire because it was too large.
A. the surface area of rocks decreases because of acid rain
your answer would be D: crust and outer part of the mantel
Answer:
The correct option is: dew point temperature
Explanation:
Dew point refers to the temperature of the air when it is saturated with water vapor. The dew point temperature is dependent on the humidity in the air. It is <u>directly proportional to humidity and moisture content in air</u>. <u>Therefore, a lower dew point means lower moisture content. </u>
When the air is cooled beyond its dew point, the water vapour in the air condenses to liquid water, called dew.
<span>The remaining forms consist of the hardest rock.</span>
