Explanation

Pascal (Pa) is defined as 1 Newton per square meter (N/m²).

It measures the amount of force applied over a unit area.

Explanation

Sea caves are formed when sea waves erode the base of a cliff, creating deep depressions in the rock.

These caves are typically shaped by the continuous action of water eroding the rock over time.

Explanation

Evolution theory explains that the world and living beings follow a natural order and regularity through gradual changes over time.

It is primarily associated with Charles Darwin, who proposed that species evolve through natural selection.

Explanation

Speed of light in air (or vacuum) is approximately 3 × 10⁸ m/s (299,792,458 m/s), which is the fastest speed possible in nature.

Light slows down in denser mediums like water or glass due to interactions with particles, but in air, it remains very close to its speed in a vacuum.

Explanation

Liquid-cooled garments were first developed for astronauts to regulate body temperature in space.

Now, they are also used by nuclear reactor workers and car racers to prevent overheating in extreme environments.

Explanation

In 1969, Whittaker proposed a system of classification that divided all living organisms into five kingdoms:

1. Monera (bacteria and cyanobacteria)
2. Protista (protozoa, algae, and slime molds)
3. Fungi (mushrooms, molds, and yeasts)
4. Plantae (plants)
5. Animalia (animals)

Explanation

Salads often contain vegetables rich in vitamin A, beta-carotene, and antioxidants, which support eye health.

Regular salad intake can help maintain good vision and protect against eye disorders.

Explanation

In animal cells, after nuclear division, a cleavage furrow forms in the middle of the cytoplasm during cytokinesis.

This furrow deepens and eventually splits the cell into two daughter cells.

Explanation

Golden rice is genetically modified to produce beta-carotene, a precursor of vitamin A.

It is developed to combat vitamin A deficiency in regions where this nutrient is scarce.

Explanation

Table tennis balls are traditionally made from casein, a protein derived from milk.

Casein gives the balls their lightweight and durable properties for gameplay.