Explanation

A mass of ice originating in mountains in snowfields above the snowline is called a Glacier.

Glaciers slowly move downhill due to gravity.

They are a major source of freshwater and rivers in the mountains.

Explanation

• Veins are the blood vessels that carry blood from other parts of the body back to the heart.
• They have one-way valves that prevent blood from flowing backwards and ensure it keeps moving towards the heart.

Explanation

Tectonic Plates Movement (Most Common): The Earth's crust is broken into large tectonic plates that constantly shift. 

Volcanic Activities: Movement of magma beneath volcanoes can cause shifts and trigger earthquakes.

Tectonic Dislocation (Faults): This refers to the actual fractures (faults) in the crust where plates slide past each other, which is the direct mechanism for most plate-related earthquakes.

Other Causes: Human activities (mining, large reservoirs) and even large collapses of rock can also cause minor seismic events. 

Explanation

Nuclear fission is the splitting a heavy nucleus into smaller nuclei. 

The word "fission" means splitting, so in nuclear fission, a large, unstable nucleus is split apart into smaller nuclei, releasing energy in the process. 

Explanation

Explanation

D 1 appears to refer to a specific genotype, D1.1, of the H5N1 avian influenza (bird flu) virus. 

The "H" stands for Hemagglutinin, and "N" for Neuraminidase — proteins found on the surface of the influenza virus.  

So, HX is associated with viruses, not bacteria, vaccines, or fungi. 

Explanation

This is Einstein’s famous mass-energy equivalence formula, where:  

- E = Energy  

- m = Mass  

- c = Speed of light (approximately 3 × 10⁸ m/s)

Explanation

Sugarcane generally has the longest cultivation-to-harvest period, taking 10 to 18 months (or even longer in some regions) to mature

Cotton: Around 5–6 months (a single growing season).

Rice: About 3–6 months (single season).

Wheat: Completes life cycle in one season (shorter than cotton/sugarcane). 

Explanation

Colour blindness is significantly more common in males than in females.

The other conditions listed are either more common in women or have a more complex relationship with gender. 

Explanation

Lithium is the lightest metal.

Density of 0.534 g/cm³.

It is an alkali metal,

The third element on the periodic table,

It is soft enough to be cut with a knife.

Uses: Due to its low density and high reactivity, it's used in aircraft and, famously, in the production of batteries for electric vehicles and consumer electronics.