Explanation

Rest and motion are considered relative because they depend on the observer’s frame of reference.

An object may appear to be at rest in one frame and in motion in another.

Explanation

Insulin is the hormone secreted by the pancreas, which plays a crucial role in regulating blood sugar levels.

It helps in the metabolism of proteins, starches, and fats by facilitating the absorption of glucose into cells.

Explanation

Topology is a branch of mathematics that studies the properties of space that are preserved under continuous transformations like stretching and bending, without tearing or gluing.

It focuses on concepts such as continuity, compactness, and connectedness.

Explanation

Thomas Edison is often credited as a key figure in the development of motion picture technology due to his invention of the Kinetoscope, an early motion picture exhibition device.

His contributions in the late 19th century laid the groundwork for the commercial motion picture industry, making him a pivotal figure in film history.

Explanation

A White Dwarf is the remnant of a low or medium-mass star (like our Sun) after it has exhausted its nuclear fuel (hydrogen and helium).

It no longer undergoes fusion and slowly cools over billions of years.

Explanation

Lungs are vital organs in the respiratory system that help in gas exchange—taking in oxygen and releasing carbon dioxide.

They work closely with the circulatory system to supply oxygenated blood to the body.

Explanation

In space, beyond Earth's atmosphere, the sky actually looks black because there is no air to scatter sunlight.

The blue color we see from Earth is due to Rayleigh scattering in the atmosphere, not the actual color of the sky.

Explanation

Whales are marine mammals.

It belonging to the order Cetacea.

This also includes dolphins and porpoises.

They breathe air, give birth to live young, and produce milk to feed their offspring, like all mammals.

Explanation

During intense exercise, lactic acid and other metabolic by-products accumulate in the body.

Rest helps the body recover and neutralize these substances, restoring normal function and reducing fatigue.

Explanation

Instinct is a natural, inborn behavior that animals perform without prior learning or conscious thought.

It is often triggered by specific stimuli.

It is automatic and consistent across a species.