Explanation

My sister has been living in Paris for three years.

میری بہن تین سال سے پیرس میں رہ رہی ہے۔

We use "for" with a duration of time (e.g., for two hours, for ten years).

Explanation

In electronic transitions, a direct transition from 2s to 1s is forbidden.

Due to quantum mechanical selection rules.

Explanation

As an object approaches the speed of light, the object's mass becomes infinite and so does the energy required to move it.

That means it is impossible for any matter to go faster than light travels.

Explanation

In "Goodbye, Mr. Chips", there is a scene at the club where the discussion revolves around the themes of determination and opportunity, reflecting on how people rise in life through effort or circumstance.

Explanation

Chile saltpeter is the common name for sodium nitrate (NaNO₃).

It is found naturally in Chile and Peru.

It is used in fertilizers and explosives.

Explanation

Transpiration is ultimately the main driver of water movement in xylem, combined with the effects of capillary action.

The cohesion-tension model works like this: Transpiration (evaporation) occurs because stomata in the leaves are open to allow gas exchange for photosynthesis.

Explanation

Tides are primarily caused by the gravitational pull of both the Moon and the Sun.

The Moon has a stronger effect due to its proximity to Earth.

The Sun's gravitational influence also plays a significant role in the tidal patterns we observe.

Explanation

Herbivores: These animals eat only plants.

The word "herbivore" comes from the Latin words "herba" (meaning plant) and "vorare" (meaning to eat).

Detritivores: These animals eat decaying organic matter.

Omnivores: These animals eat both plants and animals. 

Carnivores: These animals eat only meat. 

Explanation

The escape velocity of a body in the gravitational field of Earth is primarily dependent on the mass of the Earth and the radius of the Earth.

It does not depend on the mass of the body or the angle at which it is thrown.

The formula for escape velocity 𝑣e is given by:

Explanation

The correct answer is (a) trichotomy property of real numbers.

The trichotomy property states that for any two real numbers a and b, exactly one of the following must be true: a > b, a = b, or a < b.