441. The Plio-Pleistocene boundary lies about ____ years ago, at the beginning of the interval of warming after the last Pleistocene glaciations. September 19, 2025 by Admin A. 1,00,000 B. 1,000 C. 10,000 D. 100 ✅ The correct answer is option C.
442. Which of the following is concerned with the description and mapping of the main features of the universe? September 19, 2025 by Admin A. Cosmography B. Cosmology C. Geomorphology D. None of these ✅ The correct answer is option A.
443. The moon orbits the earth at a mean distance approximately September 19, 2025 by Admin A. 0.384 million km B. 149.6 million km C. 579 million km D. 227.9 million km ✅ The correct answer is option A.
444. The mean surface temperature of the sun is estimated to be of the prder of September 19, 2025 by Admin A. 5500�C B. 4000�C C. 2000�C D. 1000�C ✅ The correct answer is option A.
445. The main types of air mass include September 19, 2025 by Admin A. All of the above B. I, III, IV C. I, IV D. I, II ✅ The correct answer is option A.
446. The Pyrenees mountains are located on the border between ____ and ____ September 19, 2025 by Admin A. Romania, Bulgaria B. Norway, Sweden C. Hungary, Romania D. France, Spain ✅ The correct answer is option D.
447. The time at a place is determined by September 19, 2025 by Admin A. the parallels of longitude B. the parallels of latitude C. distance from equator D. distance from prime meridian ✅ The correct answer is option A.
448. The periods of different eras are further divided into September 19, 2025 by Admin A. eons B. epochs C. stages D. Any of the above ✅ The correct answer is option C.
449. Which of the following is measured on the Richter scale? September 19, 2025 by Admin A. Density of liquids B. Intensity of earthquakes C. Velocity of tornadoes D. Height of mountains ✅ The correct answer is option B.
450. Which of the following is concerned with the study of characteristics, origin and development of land forms? September 19, 2025 by Admin A. Ecology B. Geography C. Geology D. Geomorphology ✅ The correct answer is option D.