Option D is the correct answer. Demographics of a population are different aspects of their characteristics, such as age.
The part of China that is mostly grassland and dessert is Inner Mongolia
The Earth has a crust, mantle, outer core and the inner core with each one getting hotter than the next. How come, over millions and millions of years, the heat that is at the center of the Earth hasn't conducted throughout the planet's material so that the entire planet is one even temperature?
This always bothered me because we all learn that temperature diffuses from high areas to low areas, yet the Earth's center is super hot while if you dig a one foot hole, the ground feels quite cold.
Answer: Correct answer is A.
hope this answer help u gays
Explanation: