A. The worm population would increase, because there are no predators to eat them up!
The difference is that ethnicity is a socially defined category of people who identify with each other and culture is a range of humans that aren’t genetic inheritance.
Explanation:
Of all the continents, Europe and Asia are the most densely populated. Asia alone contains more than 60 percent of the world's people. Which continents are most densely populated? Today, most people in Europe, North America, South America, and Australia live in or around urban areas.
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
