Gravity is the primary force that causes sediment to be transported downstream in rivers.

Wind is primarily caused by differences in atmospheric pressure.

The Earth's crust is primarily composed of oxygen, which combines with silicon to form silicate minerals.

The Earth's crust is primarily composed of basalt (oceanic crust) and granite (continental crust).

The inner core is primarily composed of solid iron, along with some nickel.

The outer core is primarily composed of liquid iron and nickel, which is crucial for generating the Earth's magnetic field.

Latitude is the primary factor that affects climate in a region, as it determines the angle of sunlight received.

All of the above factors affect soil erosion rate.

Carbon Dioxide is the primary gas responsible for the greenhouse effect.

Seismic waves generated by earthquakes are the primary method used to study the Earth's interior structure.

The Earth's magnetic field is primarily generated by the flow of molten iron in the outer core.

Tectonic plates move primarily due to convection currents in the mantle, which are caused by the heat from the Earth's core.

The primary reason for the occurrence of seasons on Earth is the tilt of the Earth's axis.

The primary source of energy for the Earth's climate system is the Sun.

The outer core is in a liquid state, composed mainly of molten iron and nickel.

A large body of saltwater that is smaller than an ocean is called a sea.

Humidity refers to the amount of water vapor present in the air.

A watershed is the area of land that drains water into a river, collecting precipitation and runoff.

Climate refers to the average weather conditions in a particular area over a long period, typically 30 years or more.

The boundary between two different air masses is called a front.

The term for the boundary between two tectonic plates is called a Plate boundary.

The phenomenon where warm air rises and cool air sinks is called Convection.

The process by which water vapor turns into liquid water is called Condensation.

IST is GMT + 5 hours 30 minutes.

The difference in longitude is |20° - 10°| = 10°. The time difference is 10 * 4 = 40 minutes.

The total difference in degrees is 120 + 60 = 180 degrees. The time difference is 180/15 = 12 hours.

The total difference in degrees is 120° + 60° = 180°. 180° * 4 minutes = 720 minutes = 12 hours. The time difference is 12 hours.

Total difference = 120° + 60° = 180°. Time difference = 180°/15° = 12 hours.

The difference in degrees is 45° - 15° = 30°. Since each 15° represents 1 hour, the time difference is 30°/15° = 2 hours.

The total angular distance is 30° + 30° = 60°. The time difference is 60 / 15 = 4 hours.