Primary sources can be described as those sources that are closest to the origin of the information. They contain raw information and thus, must be interpreted by researchers. Secondary sources are closely related to primary sources and often interpret them.
Answer:
The Earth is formed from space gas, dust, and other galactic materials. Like the other planets in the Solar System, the Earth was created when material that orbited the early Sun began to accumulate into a spherical body.
Explanation: Hope this help
Answer: 
Explanation:
The Tropic of Cancer is one of the parallels (imaginary line around the Earth parallel to the equator) located in the northern hemisphere (currently its latitude is 
).
It is called "Cancer" because a long time ago, when the summer solstice occurred in the northern hemisphere (on June 20th or 21st), the Sun was in the constellation Cancer (the crab).
Now, if we were just in the North Pole, Polaris would by exactly over our heads (
over the horizon), but as we go south and find the Tropic of Cancer parallel, Polaris altitude will be approximately at an angle of over the horizon.
Hence, the altitude of Polaris measured by an observer at the Tropic of Cancer is .
Ans I think it's the cylinder
Explanation:
The maps of world biomes are thought of as maps of theoretical natural vegetation because of heavy interference by humans
The 5 types of biomes includes:
- aquatic
- grassland
- forest
- desert
- tundra
The maps of the combined biomes of world map is seen as theoretical natural vegetation.
In conclusion, the maps of world biomes are thought of as maps of theoretical natural vegetation because of heavy interference by humans
Read more about biomes:
<em>brainly.com/question/579803</em>
