जीव विज्ञान की विभिन्न शाखाओं के जनक जीव विज्ञान के जनक अरस्तू (Aristotle) को माना जाता है। उन्हें जूलॉजी (Zoology) का भी जनक माना जाता है, जो जीव विज्ञान की एक शाखा है। जीव विज्ञान शब्द का प्रयोग सबसे पहले 1802 में लैमार्क और ट्रेविरेनस ने किया था शाखा (Branch) जनक (Father) कोशिका विज्ञान (Cytology) रोबर्ट हुक भारतीय […]
भारत के राष्ट्रीय उद्यानों की सूची 2025 तक, भारत में 107 राष्ट्रीय उद्यान हैं, जो 44,402.95 वर्ग किलोमीटर के क्षेत्र में फैले हुए हैं, जो देश के कुल भौगोलिक क्षेत्र का लगभग 1.35% है। ये उद्यान विविध पारिस्थितिक तंत्रों और वन्यजीवों की रक्षा करते हैं। भारत के राष्ट्रीय उद्यान क्र.सं. राष्ट्रीय उद्यान स्थापना वर्ष शहर/ज़िला राज्य क्षेत्रफल
भारत के प्रमुख शोध संस्थान एवं उनके अध्यक्ष (जुलाई 2025 तक की जानकारी के अनुसार ) यहाँ भारत के प्रमुख अनुसंधान केंद्रों और संस्थानों की एक अद्यतन सूची है, जिसमें उनके मुख्यालय, राज्य और वर्तमान अध्यक्ष या निदेशक (जुलाई 2025 तक की जानकारी के अनुसार) शामिल हैं। अनुसंधान केन्द्र (Research Centre) मुख्यालय (Headquarters) राज्य (State)
How Latitude Affects the Distribution of Solar Radiation If Earth were a flat surface oriented perpendicularly to the Sun, solar rays would be distributed uniformly across its entirety. However, due to Earth’s spherical shape, the intensity and quantity of solar radiation significantly vary with latitude. Regions situated at higher latitudes receive markedly less solar energy
Ocean heating phenomenon refers to the systematic redistribution of thermal energy from low-latitude oceanic regions to polar areas through atmospheric and oceanic circulation systems. Near polar regions, solar radiation strikes Earth’s surface at low angles with high albedo from ice surfaces reflecting substantial energy back to space. Conversely, in the 35°N to 40°S latitude zone, steeper solar angles enable greater energy absorption. This creates a net heat gain in equatorial oceans and net heat loss in polar regions, driving global heat redistribution through thermohaline circulation and atmospheric processes.
What is the ocean heating phenomenon? Complete Guide Read More »
What Causes Earth’s Seasons? This seemingly straightforward inquiry often leads to a common misunderstanding: Although Earth follows an elliptical trajectory around the Sun that deviates only minimally from a perfect circle, the changing distance between Earth and the Sun is not the primary cause of seasonal variation. Instead, as elaborated below, the fundamental factor influencing
Why did the Mughals fail? The Mughal Empire, established by Zahiruddin Babur following his decisive triumph at the Battle of Panipat in 1526, experienced continuous expansion under his successors. It attained its maximum territorial extent during the reign of Aurangzeb (1657–1707), when the empire extended from Kashmir in the north to Jinji in the south
Humid air is actually lighter than dry air at the same temperature and pressure. This counterintuitive fact occurs because water vapor molecules (H₂O, molecular weight 18) are lighter than the nitrogen (N₂, molecular weight 28) and oxygen (O₂, molecular weight 32) molecules they replace in the atmosphere. According to Avogadro’s law, equal volumes of gases contain the same number of molecules, so when lighter water vapor displaces heavier air molecules, the overall mass decreases, making humid air less dense than dry air.
Is Humid Air Heavier Than Dry Air? Scientific Facts 2025 Read More »
Coral reefs are marine ecosystems formed by colonies of coral polyps held together by calcium carbonate. These biodiversity hotspots support over 4,000 fish species and 800 hard coral species, earning them the nickname “Rainforests of the Sea.” Coral reefs require warm water temperatures (70-85°F), clear shallow waters, and adequate sunlight for their symbiotic algae called zooxanthellae to perform photosynthesis.
What Are Coral Reefs? Ecosystem Facts & Conservation 2025 Read More »
Imagine a landmass entirely surrounded by water, isolated from the rest of the world. From the massive expanse of Greenland to the tiny coral atolls of the Pacific, islands are among Earth’s most fascinating geological features. Yet, not all islands are created equal. Some broke away from ancient continents, while others rose violently from the
How Islands Form: The Geology Behind Hawaii, Madagascar, and Dubai Read More »