Explanation

The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium.

The speed of sound is 343.2 metres per second.

Explanation

A seahorse is any of 46 species of small marine fish in the genus Hippocampus.

"Hippocampus" comes from the Ancient Greek hippókampos, itself from híppos meaning "horse" and kámpos meaning "sea monster" or "sea animal". 

Scientific name: Hippocampus

Family: Syngnathidae

Kingdom: Animalia

Explanation

• The hottest stars appear blue in color.
• Blue stars are very hot, with surface temperatures reaching tens of thousands of degrees Celsius.
• It emitting predominantly blue and ultraviolet light.

Explanation

The nucleus, formed by a nuclear membrane around a fluid nucleoplasm, is the control center of the cell.

Threads of chromatin in the nucleus contain deoxyribonucleic acid (DNA), the genetic material of the cell.

Explanation

 In a neutralization reaction, an acid reacts with base to produce a salt and H2O.

Explanation

Aluminium powed + Nitrate Called Ammonal  

Ammonal is an explosive made up of ammonium nitrate and aluminium powder, in which the ammonium nitrate functions as an oxidizer and the aluminium as fuel.

The mixture is often referred to as Tannerite, which is a brand of ammonal.

The ammonium nitrate functions as an oxidizer and the aluminium as fuel.

The use of the relatively cheap ammonium nitrate and aluminium makes it a replacement for pure TNT.

Explanation

The semiconductor band Gap is half-filled.

The term "band gap" refers to the energy difference between the valence band's top and the conduction band's bottom.

The band gap phenomenon occurs when two adjacent allowed bands are not wide enough to span the full range of electron energy levels.

Explanation

When an object is placed between the focus and centre of curvature, the concave mirror can form an image larger than the actual object.

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Concave Mirror used for:

1. Shaving mirrors.
2. Head mirrors.
3. Ophthalmoscope.
4. Astronomical telescopes.
5. Headlights.
6. Solar furnaces.

Explanation

Nutrient cycling is a cyclic process that encompasses the movement of nutrients from the physical environment to living organisms and back to the environment.

Explanation

gluconeogenesis can be broadly considered the reversal of glycolysis

The Calvin cycle, Calvin–Benson–Bassham (CBB) cycle, reductive pentose phosphate cycle (RPP cycle), or C3 cycle is a series of biochemical redox reactions that take place in the stroma of chloroplast in photosynthetic organisms.