Question
What resource do we receive directly from outside Earth
rather than from natural terrestrial sources?Solution
Energy, specifically solar radiation from the Sun, represents the only resource among these options that Earth receives directly from extraterrestrial sources rather than from within the planet itself. This solar energy drives fundamental planetary systems including photosynthesis, weather patterns, ocean currents, and the water cycle. While Earth also receives cosmic radiation from space, solar energy remains our most significant external energy source. In contrast, the other options originate entirely from Earth's internal resources: minerals are extracted from the planet's crust; coal forms from compressed plant matter over millions of years within the Earth; and natural gases such as methane are found in subsurface deposits accessed through drilling operations.
What structural model of DNA was proposed by Watson and Crick in 1953?
Which of the following statements is NOT true with regard to system of rice intensification (SRI)?
i. It follows the principle of careful plantin...
Phenol reacts with zinc dust gives:
Angle formed by a attached branch to the trunkÂ
Which of the following is most suitable root stock of mandarin?
Maize is generally not grown in
Genetic drift is prominent in:
Flower crop resistant to ethylene injury (sleepiness) isÂ
GC → TA transversion is caused by:
Match List I with respective critical stage of irrigation of crops List II