• the Americas were less densely woven than in the afro-Eurasian region. There was no equivalent to the silk, sea, or sand roads. • Spread of agricultural products was slower and less pro owned on the Americas • Spread of distinct cultural traditions like Buddhism, Christianity, or Islam · Americas did have zones of interaction • River networks of North America, where commerce plays an important role in regions where contact was possible, the dense communication lays between rather than within the regions that housed the two great civilizations of the Western Hemisphere- mesoamerica and the Andes.
Water vapor is important because it is the source of all clouds and precipitation and like carbon dioxide, it is also a heat absorber. Aerosols are important bc many acts as surfaces on which water vapor can condense, an important function in the formation of clouds.
Water vapor, steam, or steam is the gas phase of water. The state of water in the hydrosphere. Water vapor is produced by evaporation or boiling of liquid water or sublimation of ice. Water vapor, like most components of the atmosphere, is transparent. Under typical atmospheric conditions, water vapor is continuously produced by evaporation and removed by condensation. It is less dense than most other components of air and causes convection currents that lead to cloud formation.
As part of the Earth's hydrosphere and the water cycle, it is particularly abundant in the Earth's atmosphere, where it acts as a greenhouse gas and warming feedback, and is a more global gas than non-condensable gases such as carbon dioxide and methane. Contribute to the greenhouse effect. The use of water vapor as steam has been important since the Industrial Revolution as a major component of cooking and power generation and transportation systems.
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Answer:
you will see contour elevation numbers. This is the elevation of the contour line, relative to mean sea level. Contour lines that are relatively close together indicate a slope that is fairly steep.
Explanation:
Answer:
Explanation:
Given that:
Area = 475 acres
The length of the channel (L) = 6870 feet
The average water shield slope (S) = 100 feet/mile
Since; 1 mile = 5280 feet
Burst duration D = 15 min
∴
100 feet/mile = 100/5280
The average water shield slope (S) = 5/264
Using hydrograph method:
The time of concentration 
where;
L = 6870
S = 5/264
min
Since 60 min = 1 hour
32.34 min will be (32.34*1)/60
= 0.539 hour
Lag time 
The time to peak i.e
Since D = 15 min is not equal to 
, then we hydrograph apart from duration lag time.
Then;
Now, we need to determine the peak discharge 
by using the formula:
where
484 = peak factor
Recall that A = 475 acres, to miles, we have:
A = 0.7422 mile²
∴
