Insights Static Quiz -291, 2019–Geography

Solution: d)

Solution: d)

Zeugen, Yardangs, Rock Pedestals and Inselberg are the landforms of wind erosion in deserts.

A Zeugen is formed in desert area where alternating horizontal layers of hard and soft rocks occur.

Yardangs: Ridge of rock, formed by the action of the wind, usually parallel to the prevailing wind direction.

Inselberg is an isolated hill or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain.

Rock pedestals or mushroom rocks are landforms created by abrasion in which grains cut away the base of rock structures but leaves their tips intact.

Solution: c)

India’s average density-382 per sq km as per 2011 census.

Goa – 394

Assam – 397

Karnataka – 319

Jharkhand – 414

Solution: a)

The density of a population in a given habitat during a given period, fluctuates due to changes in four basic processes, two of which (natality and immigration) contribute an increase in population density and two (mortality and emigration) to a decrease.

(i) Natality refers to the number of births during a given period in the population that are added to the initial density.

(ii) Mortality is the number of deaths in the population during a given period.

(iii) Immigration is the number of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration.

(iv) Emigration is the number of individuals of the population who left the habitat and gone elsewhere during the time period under consideration.

Solution: b)

The Arctic Ocean is located within the Arctic Circle and surrounds the North Pole. It is connected with the Pacific Ocean by a narrow stretch of shallow water known as berring strait.