Answer:
C. A density gradient tube and a soil triangle
Explanation:
- The soil analysis is used to breaks the soil indifferent type on the basis of the texture class such as the silt, clay and sand etc. Influenced by the nutrient, and the water retention capacity.
- Soil triangle is used to define the type of the soil texture and also helps to establish the quality and nature of the soils found in various environmental conditions.
Answer:
Human systems and political systems has created the quality of living in Northern European countries the best in Europe. This may be seen in Southern Europe as a full, with northern half being a lot of urban and southern elements being a lot of rural. It made Northern Europe more advance in infrastructure and social issues.
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When the price of oil drops this usually means that OPEC or a major state within OPEC like Saudi Arabia, or Venezuela has increased the supply of oil leading to a drop in price. This is the current policy of the Saudi Government which has led to a drastic decline in oil prices over the last 3 to 4 months.
