The heat that remains inside the Earth from its creation and radioactive decay are its main heat sources.
The deep earth receives heat from three main sources: (1) heat left over from the planet's formation and accretion, (2) frictional heating brought on by denser core material sinking to the planet's centre, and (3) heat from radioactive element decay.
The energy produced when unstable atoms decay is known as radioactivity, and it is a substantial contributor to the Earth's heat. The main source are the radioactive isotopes of uranium-235 (235U), uranium-238 (238U), potassium-40 (40K), and thorium-232 (232Th) in the Earth's mantle.
To know more about Earth, click here:
brainly.com/question/12041467
#SPJ4
A perennial river can be defined as a river that is <u>continually flowing </u><u>throughout the </u><u>year </u><u>in at least some parts. </u>
A lot of rivers tend to dry up in the dry seasons because the supply of water from rain would be gone.
Perennial rivers:
- Are capable of flowing all year round.
- Include examples such as the Nile, the Mississippi, and the Amazon.
In conclusion, a perennial river is continuously flowing.
Find out more on benefits of perennial rivers at brainly.com/question/1152007.
Measurement and Data
A Global Network
Secular Variation and Earth's Core
Crust, Ocean, and Mantle
Quiet Time Variation and the Ionosphere
Magnetic Storms and the Magnetosphere
i gave you six because im not sure im right but i hope it helps im sorry if they are wong tho :/
Answer:
the Korean War began in 1950 when North Korean communist Army came into the 38th parallel and invaded non-communist South Korea.
Explanation:
so the main reason that this war happened was because of the spread of Communism during the Cold War and Japanese Occupation of Korea during World War II
(have a great day!)
