Iron was able to show previous orentations of earth's magnetic field
Answer:
The correct option is: 2,250,000 kg
Explanation:
Given
: Area A = 1 ha (Hectare) = 10,000 m²
Bulk density = 1.5 Mg/m³ = 1.5 × 1000 kg/m³ = 1500 kg/m³ (∵ 1 Mg=1000 kg)
Depth of soil = 15 cm = 0.15 m (∵ 1 m = 100 cm)
Volume can be calculated by:
Volume = area × Depth = 10,000 m² × 0.15 m = 1500 m³
As we know, density = mass/ volume
Therefore, <u>Mass of soil</u> = Bulk density × volume = 1500 kg/m³ × 1500 m³ = 2,250,000 kg
Hurricane: a type of storm called a tropical cyclone, which forms over tropical or subtropical water.
The ocean water evaporates caused by heat from the sun. The evaporating water forms a cloud of warm, moist air that moves upward. Then, as the warm, moist air rises, more air rushes into replace it.
Hurricanes form near the equator over warm oceans.
Tornado: a mobile, destructive vortex of violently rotating winds having the appearance of a funnel-shaped cloud and advancing beneath a large storm system.
Most tornadoes form from thunderstorms. You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada.
The main factors are pollution and green hous gas
