The correct answer is true
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.
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I think it refers to worldwide mutual dependence between nations/countries as we depend on each other for the key things like food etc. on a worldwide level.
The leading natural resource in Nigeria is oil
Answer: The correct option is A. Agriculture and Industry.
Explanation:
The primary activities are of great importance in india, it is thanks to this that india is the second largest agricultural producer in the world. India is the largest producer of many fruits, milk, spices, meats, coconuts, tea, ginger among others. It is also the second largest producer of wheat, rice, sugar and peanuts.
The indian industrial sector employs more than 100 million people. The main industries are textiles, processed foods, chemical products, transport equipment, steel, cement, petroleum, software and medicines.