Explanation

• When light travels from a denser to a rarer medium, it bends away from the normal due to refraction.
• The production of an image by or as if by a mirror is called reflection.

Explanation

Infected cells produce and release interferons, a type of cytokine.

These proteins interfere with viral replication and activate both innate and adaptive immune defenses.

It helping other cells boost their antiviral responses.

Explanation

• Rickets is a disease caused by a deficiency of Calcium and Vitamin D.
• It leading to softening of the bones in children.
• It can cause bowed legs, stunted growth, and skeletal deformities.

Explanation

Lions are the only species of the cat family that live and hunt in groups, known as prides.

Unlike other big cats, they exhibit social behavior and cooperative hunting.

Explanation

Horses are not ruminant animals.

Cows, sheep, and goats, which have specialized stomachs for digesting plant-based food through rumination.

Explanation

If a plant has already become invasive in other regions.

It indicates a high potential to spread rapidly and outcompete native species in new environments as well.

Explanation

Warm-blooded animals maintain a high body temperature to enhance muscle efficiency and coordination.

It is supports faster and more effective movement.

This increased body temperature also helps in sustaining higher overall activity levels.

Explanation

Ice always floats because it is less dense than regular water.

Because frozen water molecules form a crystal

They take up more space and have a lower density than regular liquid water.

Explanation

Good conductors of electricity:-

gold,

silver,

copper,

aluminum,

and graphite.

***

Bad conductors of electricity:-

plastic,

rubber,

glass,

air,

wood,

charcoal,

and diamond.

Explanation

The mantle is crucial as it plays a key role in geological processes a such as plate tectonics, which affect earthquakes, volcanoes, and the formation of mountain ranges.

The structure of the earth is divided into four major components:

1. the crust,
2. the mantle,
3. the outer core,
4. the inner core.