Answer:
2. Poorly defined soil horizons
Explanation:
Soils in cold, wet climates typically feature thick organic surface deposits and poorly defined soil horizons due to slow decomposition and limited soil development, but they do not support numerous soil-forming organisms. Hence correct option 1 and 2.
Soils that form in cold, wet climates are influenced by the factors of climate, organisms, and time which affect soil genesis. These soils tend to have the following characteristics:
Thick organic surface deposits in depressions due to the slow decomposition rates in cold climates.
Poorly defined soil horizons because the low temperatures and reduced biological activity limit soil development.
Despite the cold conditions, soils in such climates do not support a great number of soil-forming organisms due to the harsh living conditions.
Given these points, the correct answer to the question is that soils in cold, wet climates are likely to have options 1 and 2: thick organic surface deposits in depressions and poorly defined soil horizons but not a great number of soil-forming organisms.
Why is the Mekong River so important to Southeast Asia?
Answer:
More than 70 million people live in the Mekong river basin, and they rely on the river for drinking water, food, irrigation, hydropower, transportation and commerce. The Mekong and its wildlife have strong cultural significance too.
The Mekong River is Southeast Asia's lifeblood. It provides water, food, and transportation to millions of people in the region. The river also supports a varied ecology, which includes several endangered species.
Here are some of the reasons why Southeast Asia values the Mekong River:
Water: The Mekong River is Southeast Asia's lifeblood. Millions of people in the region rely on it for drinking water, irrigation water, and industrial water. The river also aids in climate regulation, averting droughts and floods.Food: The Mekong River is home to the greatest inland fishery in the world. It generates an estimated 4.5 million metric tons of fish each year, providing a critical source of nourishment for the region's residents.Transportation: In Southeast Asia, the Mekong River serves as a major transportation corridor for both people and cargo. It is used for transporting people, conveying products, and fishing.Hence, Southeast Asia relies heavily on the Mekong River. It is critical to the economy, ecology, and culture of the region.
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