Tag: science & technology

Tectonic plates are lithospheric plates - they comprise the crust and uppermost solid part of the mantle. The lithosphere is broken into moving plates that 'float' on the asthenosphere below. The mantle includes both the lithosphere and asthenosphere, while the outer core is liquid and inner core is solid - neither contains tectonic plates.

Approximately 11-12% of Earth's total surface is land suitable for human habitation when considering all factors: only about 29% is land, and of that, significant portions are mountains, deserts, polar regions, or otherwise inhospitable. One-eighth (12.5%) is a reasonable approximation of the truly habitable portion.

When you bounce a ball, you apply force downward. According to Newton's third law, the floor exerts an equal and opposite reaction force upward on the ball, causing it to bounce back. This reaction force is what propels the ball upward. Inertia is resistance to motion change, buoyancy applies in fluids, and 'Force???' is meaningless.

The asteroid belt (or main asteroid belt) is the region between Mars and Jupiter where most asteroids in our solar system are found. It contains millions of rocky and metallic objects. The Oort Cloud is far beyond Pluto, 'Space.......' is meaningless, and planets themselves are not a group.

Herbivores are animals that eat only plants. They have specialized digestive systems to process plant material. Examples include cows, deer, rabbits, and elephants. Carnivores eat meat, detrivores feed on dead organic matter, and option B is just the question restated, not a term.

The stapes bone, commonly called the stirrup, is the smallest bone in the human body. It is located in the middle ear and measures approximately 3-4 millimeters in length. The stapes, along with the malleus (hammer) and incus (anvil), transmits sound vibrations from the eardrum to the inner ear.

Reflection is the phenomenon where light bounces off a surface like a mirror. The angle of incidence equals the angle of reflection. Refraction (option B) is the bending of light as it passes through different media, which is distinct from bouncing off a surface.

Frogs are amphibians, a class of cold-blooded vertebrates that typically live on land but breed in water. They undergo metamorphosis from aquatic larvae (tadpoles) to terrestrial adults. Amphibians also include salamanders and caecilians. Frogs are not reptiles (which have scales) or mammals (which have hair and mammary glands).

The liver is the body's primary detoxification organ. It processes and neutralizes toxins, drugs, and metabolic waste products. The liver breaks down harmful substances and makes them excretable. The kidneys filter waste from blood (but don't process toxins like the liver), and the pancreas produces digestive enzymes and hormones - not detoxification.