1762. The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemisphere is that:

A. The earth is closer to the sun in January
B. The earth is farther from the sun in July
C. Over 80% of the Southern Hemisphere is covered with water
D. The sun’s energy is less intense in the Southern Hemisphere
✅ The correct answer is option C.
Over 80% of the Southern Hemisphere is covered with water.

1763. The head quarter of IUCN is located in

A. Paris
B. Switzerland
C. England
D. Germany
✅ The correct answer is option B.
Its headquarters are in Gland, Switzerland. IUCN has observer and consultative status at the United Nations and plays a role in the implementation of several international conventions on nature conservation and biodiversity.

1764. The term “Nuclear winter” is associated with

A. Nuclear War
B. Nuclear disarmament
C. Nuclear weapon testing
D. After effect of a nuclear explosion
✅ The correct answer is option D.
Nuclear winter is a severe and prolonged global climatic cooling effect hypothesized to occur after widespread firestorms following a nuclear war. The hypothesis is based on the fact that such fires can inject soot into the stratosphere, where it can block some direct sunlight from reaching the surface of the Earth.

1766. The atmospheric layer in which we live is called the:

A. Troposphere
B. Stratosphere
C. Thermosphere
D. Ionosphere
✅ The correct answer is option A.
The troposphere is the lowest layer of the atmosphere. This is the layer where we live and where weather happens. Temperature in this layer generally decreases with height. The boundary between the stratosphere and the troposphere is called the tropopause.

1767. What is Pedology?

A. Study of water
B. Study of air
C. Study of soil
D. none
✅ The correct answer is option C.
Pedology is the study of soils in their natural environment. It is one of two main branches of soil science, the other being edaphology. Pedology deals with pedogenesis, soil morphology, and soil classification, while edaphology studies the way soils influence plants, fungi, and other living things.

1768. A slow moving river of solid ice is called

A. delta
B. watershed
C. glacier
D. crevasses
✅ The correct answer is option C.
A glacier is a huge mass of ice that moves slowly over land. The term “glacier” comes from the French word glace (glah-SAY), which means ice. Glaciers are often called “rivers of ice.” Glaciers fall into two groups: alpine glaciers and ice sheets.