Answer: Option B
Explanation : The greatest diversity of animal and plant species occurs in Tropical moist forests. The tropical rainforests contain the greatest diversity of species of all biomes on earth. They are found around the equator, between 23.5 degrees N latitude and 23.5 degrees S latitude.

Answer: Option C
Explanation : When humidity is expressed in terms of percentage then it is known as Relative humidity. Relative humidity is expressed as a percentage. The relative humidity is 100% if the air is saturated with water vapor and 0% if no water vapor is present in the air at all.

Answer: Option B
Explanation : The snowline is the line on mountain or hill slope which is the lowest limit of perpetual snow. The Imaginary line on a mountain or a hill which forms the lower limit of perpetual snow is called snow line. Below this line the snow melts away and above this line snow never melts. The snow line does not exist at the same level everywhere on earth. The average altitude of snow line is 5500m in the equatorial region, 4000-5000m in the Himalayan region, 2700m in the Alps and 0m in the polar regions.

Answer: Option C
Explanation : The Caspian Sea is the world’s largest inland water body. The sea covers roughly 143,200 square miles (371,000 square kilometers) and borders five countries: Iran, Russia, Kazakhstan, Turkmenistan and Azerbaijan.

Answer: Option B
Explanation : A geographical mile is a measure of length equal to one sixtieth of a degree or one minute (1′) of latitude. It varies with latitudes, but is approximately equals to 6080 feet.

Answer: Option C
Explanation : Albert Canal links Antwerp and Liege. Albert Canal, waterway connecting the cities of Antwerp and Liège in Belgium. The Albert Canal is about 130 km (80 miles) long.

Answer: Option B
Explanation : The usual altitude of the plains less than 500 metres above sea level.

Answer: Option C
Explanation : Outwash plain is a depositional feature associated with Glacier. It is a plain formed of glacial sediments deposited by meltwater outwash at the terminus of a glacier. As it flows, the glacier grinds the underlying rock surface and carries the debris along.

Answer: Option A
Explanation : Strait of Malacca separates Sumatra and Malaysia. The Strait of Malacca (also called the Straits of Malacca, and in Malay Selat Melaka) is a narrow stretch of water between Peninsular Malaysia (West Malaysia) and the Indonesian island of Sumatra.

Answer: Option A
Explanation : Ladang refers to Shifting cultivation. Shifting cultivation is an agricultural system in which areas of land are cultivated for a short time. Then they are left to grow back their natural vegetation, while the farmer moves to another area.