Answer:
1 By the use of conventional signs or landmarks
2 By using compass or cardinal points
A Sun dance is a very important ritual
Answer:
The total mass of water in on Earth's surface is 
.
Explanation:
Total planetary surface area = T = 
Total land area of planet = L = 
Total water area of planet = W
T = L + W
Volume = Area × Depth
Volume of water on earth = V
V= 
Total mass of total water on the earth = M
Density of the water,D = 1 g/mL = 0.001 kg/0.001 L=1 kg/L
1 g - 0.001 kg
1 mL = 0.001 L
The total mass of water in on Earth's surface is .
The answer is D.
(Edited to combat confusion)
The correct answer is A. The expansion of international trade.
Explanation
In the photographs you can see two photographs of Hong Kong, the first is from 1910 and the second from 2000. The first photograph shows the coast of Hong Kong with few buildings and boats, while the second photograph shows large buildings and boats. This difference between the two photographs denotes that there was great growth in the city. Hong Kong's growth is because it is a special administrative region that has a free market economy that has allowed this city to be at the epicenter of world trade and economy. Therefore, the correct answer is A. The expansion of international trade.
