Answer:
The Tropic of Cancer (23° N)
The Equator (0°)
The Tropic of Capricorn (23°S)
A. Cosmology
Cosmology means the study of the cosmos, cosmo- means of or relating to the universe, therefore cosmology means the study of the universe. So it is the correct answer.
D. Hydrogen
Two elements make up the overwhelming majority of the sun's matter, by mass: hydrogen (about 70 percent) and helium (about 28 percent).
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Explanation:
step 1. let called the acute angles inside the triangle <1 and <2.
step 2. <2 +140 = 180 (supplementary angle)
step 3. <2 = 40°
step 4. <1 + <2 + 90 = 180. (interior angles of a triangle = 180°)
step 5. <1 + 40 = 90
step 6. <1 = 50°
Economic activities which includes effective trading patterns influence all country's level of development.
Countries such as China, France, United States, Japan are addressed as developed countries with sound economy because of their Modern industrial societies which brought fortunes to their revenue coffers.
There are four type of economic activities:
- Primary activities: its involves the extracting, mining, farming, fishing etc activities.
- Secondary activities: Its involves manufacturing and production of goods such as making cars, steel etc
- Tertiary activities: Its involves providing a service such as teaching, medicine, nursing etc
- Quaternary activities: Its involves research and development industries which aims at improving the other three activities.
Therefore, countries with these effective economic activities will have a developing economic system which will be influential in world.
Learn more about Economic activities here
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