Explanation

Edward Gibbon

His most important work, The History of the Decline and Fall of the Roman Empire, was published in six volumes between 1776 and 1788.

Explanation

• Ozone protects the Earth from harmful ultraviolet (UV) rays from the solar. with out the Ozone layer inside the atmosphere, existence on the earth could be very hard. plant life cannot live and grow in heavy ultraviolet radiation, nor can the planktons that serve as food for most of the sea existence.
• With a weakening of the Ozone Layer defend, human beings would be greater at risk of skin cancer, cataracts and impaired immune systems.
• Ozone can both shield and damage the Earth — it all depends on in which it is living. for example, if Ozone is present in the stratosphere of the ecosystem, it's going to act as a guard.
• however, if it is in the troposphere (about 10 km from the Earth's floor), Ozone is harmful. it's miles a pollutant that could purpose damage to lung tissues and plants. hence, an upset inside the ozone balance can have extreme outcomes

Explanation

Answer: D

The disease affects cattle, pigs, sheep, goats, and other ruminant ungulates. Intensively bred animals are more susceptible to disease than traditional breeds.

Explanation

Febriphobia is the fear of fever.

while

Aerophobia is an extreme fear of flying.

Laliophobia is a fear of speaking

Nyctophobia is the fear of  Darkness.

Anthophobia is the fear of flora.

Heliophobia is the fear of the Sun, sunlight, or any bright light.

Hemophobia, or blood phobia, 

Explanation

Sea urchins feed mainly on algae, so they are primarily herbivores, but can feed on sea cucumbers and a wide range of invertebrates, such as mussels, polychaetes, sponges, brittle stars, and crinoids, making them omnivores, consumers at a range of trophic levels.

Explanation

Braille is a tactile representation of alphabetic and numerical symbols using six dots 

We celebrate World Braille Day every year on January 4th because it's Louis Braille's birthday

Explanation

• software is the programs and routines for a computer or this system material for an electronic tool which make it run.
• An example of software is Excel or home windows or iTunes. noun.
  

Explanation

Tugela Falls is a complex of seasonal waterfalls in the Drakensberg (Dragon's Mountains)

located in Royal Natal National Park  KwaZulu-Natal South Africa. 

Tugela is the world's tallest waterfall.

Total height 983 m (3,225 ft)

Explanation

Destroyed

Antonym of Extant is Destroyed

Explanation

• synonyms for investigate · consider · examine · explore · inspect · interrogate
• Investigate mans: تحقیقات