Explanation

Arthropods are invertebrate animals with an exoskeleton, a segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda.

They are distinguished by their jointed limbs and cuticle made of chitin, often mineralised with calcium carbonate. 

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RY 11-10-2022

Explanation

ELISA: Enzyme-linked immunosorbent assay

ELISA: used laboratory tests for HIV infection

World AIDS Day: 1 December

AIDS: Acquired immunodeficiency syndrome

Explanation

Spain largest Airline: Iberia

Spain second largest Airline: Vueling

Spain third largest airline: Air Europe

Explanation

The fastest known marine animal is the sailfish.

They can reach speeds of up to 68 miles per hour.

The sailfish's streamlined body and powerful muscles, combined with its "sail" fin, make it an incredibly efficient swimmer. 

Explanation

Potassium permanganate is used as a wet dressing for wounds on your skin's surface that are blistered or oozing pus. Athlete's foot and impetigo.

Explanation

RY5022023

Explanation

Primary Sources are immediate, first-hand accounts of a topic, from people who had a direct connection with it

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Explanation

Germany introduced a Social Pension in 1889,  for the first and granted every worker who reached age of 65 a small flat pension

Explanation

 Red is the most popular color being found on approximately 75 per cent of all national flags of the world.

Explanation

The Jeddah Flagpole is a flagpole in King Abdullah Square in Jeddah, Saudi Arabia. Standing 171 metres (561 ft) high, it has been the tallest flagpole in the world since its erection in 2014