Answer:
c. is the most common atmospheric gas.
Explanation:
Nitrogen gas is the most abundant gas in the atmosphere. This gas is about 78% of total amount of gas within the atmosphere.
- The earth's atmosphere is a mixture of many gases.
- Nitrogen is the most dominant of all the gases.
- Oxygen is about 21% and closely follows Nitrogen in terms of the volume it occupies.
- Several processes living and non-living utilizes nitrogen
When an object turns around an internal axis (like the Earth turns around its axis) it is called a rotation. When an object circles an external axis (like the Earth circles the sun) it is called a revolution. rotation revolution axis spin orbit.
Answer:
If two plates move away from each other then a continental rift will form.
Explanation:
There are three basic types of plate boundaries, convergent, divergent, and transform plate boundaries. All of them have their own characteristics and the boundaries can be between oceanic and oceanic, oceanic and continental, and continental and continental plates, and each type creates different landforms.
If there are two plates moving each other over land, then a continental rift will form. Basically, the two plates slowly move away from each other, opening a gap that is constantly widening, so over time, it grows into a rift valley. Over the course of millions of years, the continental rift or rift valley will get filled by oceanic water and physically separate the two landmasses. A perfect example of this is the divergent plate boundary between the Nubian and Somali plates which have created the rift valley cutting through the eastern part of Africa.
The answer to that question is 23, to be exact. Of those 23 countries that divide up the continent, Canada, and the United States comprise nearly 80% of the total land area.
I really hope this reply serves as a complete answer and is exactly what you were looking for.
~Brooke❤️
