Tag: science & technology

At high altitudes like Mount Everest, atmospheric pressure is significantly lower, reducing water's boiling point to approximately 69-71°C.

The Milky Way is a barred spiral galaxy containing our solar system and billions of stars, not merely a constellation or solar system.

Sharks have skeletons made of cartilage rather than bone, which makes them lighter and more flexible swimmers compared to bony fish.

Mercury is the only metal that exists in liquid state at standard room temperature (20-25°C). Bromine is the only other non-metal element that is liquid at room temperature.

Hg is the chemical symbol for Mercury, derived from its Latin name 'Hydrargyrum' meaning 'liquid silver'. Copper is Cu, Helium is He, and Sodium is Na.

The most widely accepted scientific theory is that a massive meteorite impact 66 million years ago caused the Cretaceous-Paleogene extinction event. The impact created dust clouds that blocked sunlight, disrupted ecosystems, and led to the dinosaurs' extinction.

Photosynthesis is the process by which plants convert light energy (usually from sunlight), carbon dioxide, and water into glucose and oxygen. Chemosynthesis is used by some bacteria, not plants.

Monotremes are a group of egg-laying mammals. Both the platypus and echidna (spiny anteater) are monotremes found in Australia and New Guinea. They are the only mammals that lay eggs instead of giving live birth.

Mars appears red because its surface is covered with iron oxide (rust), which gives the planet its characteristic reddish-orange color. This iron-rich dust and rock material has been oxidized over billions of years, creating the distinctive red hue visible from Earth.