Human Environment Interactions Questions and Answers - Free PDF Download
FAQs on NCERT Solutions For Class 7 Social Science Our Environment Chapter 6 Human Environment Interactions - 2025-26
1. How do the NCERT Solutions for Class 7 Social Science Chapter 6 explain the main crops grown in the Ganga-Brahmaputra plains?
The NCERT Solutions provide a clear, step-by-step explanation for why certain crops thrive in the Ganga-Brahmaputra plains. They highlight the key factors:
- Topography: The region is a vast, flat plain, which is ideal for large-scale farming.
- Soil: The deposition of silt by the rivers Ganga and Brahmaputra creates fertile alluvial soil, perfect for agriculture.
- Water Availability: Sufficient rainfall and a network of rivers and their tributaries ensure adequate water for irrigation.
- Climate: The monsoon climate provides the required conditions for growing staple crops.
The solutions explain that because of these factors, the main crops grown are paddy (rice), wheat, maize, sorghum, gram, and millets. Cash crops like sugarcane and jute are also cultivated.
2. What are 'malocas' as described in the NCERT textbook for Class 7 Geography Chapter 6?
In the context of Class 7 Geography Chapter 6, 'malocas' are large, apartment-like houses found in the Amazon rainforest region. The NCERT solutions clarify that these are traditional dwellings with steeply slanting roofs, designed to help rainwater run off quickly in a region of heavy rainfall. These houses accommodate large families or entire communities.
3. According to the NCERT solutions, what is the step-by-step impact of developmental activities on the Amazon rainforests?
The NCERT Solutions for Chapter 6 detail the chain of events leading to rainforest depletion due to developmental activities. The process is explained as follows:
- Infrastructure Development: The construction of roads, like the Trans-Amazon Highway, makes previously inaccessible parts of the forest reachable.
- Deforestation: This accessibility leads to large-scale clearing of forests for setting up industries, commercial farming, cattle ranching, and logging.
- Displacement of Indigenous People: The original inhabitants, who often practised sustainable living, are pushed out, leading to a loss of traditional conservation practices.
- Soil Erosion: Once the trees are removed, the topsoil is exposed. Heavy rainfall washes this fertile topsoil away, turning lush forest areas into barren landscapes. This step-by-step degradation highlights the long-term ecological damage.
4. Where can I find accurate, step-by-step answers for all the exercises in NCERT Class 7 Geography Chapter 6?
Accurate, step-by-step answers for all the questions in the NCERT Class 7 Geography textbook, Chapter 6, "Human Environment Interactions," are provided in the NCERT Solutions. These solutions are structured to follow the CBSE 2025-26 guidelines, ensuring that students understand the correct method to frame answers for exams, covering everything from 'tick the correct answer' to 'give reasons' and descriptive questions.
5. How do the NCERT Solutions help compare the human-environment interactions in the Amazon Basin versus the Ganga-Brahmaputra Basin?
The NCERT Solutions are structured to help students draw clear comparisons between the two regions. They facilitate this by providing detailed answers on:
- Settlements: Contrasting the scattered settlements and 'malocas' in the sparsely populated Amazon with the dense cities and villages in the Ganga-Brahmaputra basin.
- Agriculture: Explaining the difference between the 'slash and burn' agriculture of the Amazon and the intensive subsistence farming of rice and wheat in the Ganga-Brahmaputra plains.
- Economic Activities: Highlighting the reliance on forest products in the Amazon versus the diverse agriculture and industry-based economy near the Ganga.
By solving the exercise questions using these solutions, students can systematically understand how different climates and topographies shape human life.
6. What is 'slash and burn' agriculture, and how is it explained in the solutions for Chapter 6?
'Slash and burn' agriculture is a farming method detailed in Chapter 6. The NCERT solutions explain it as a process where farmers clear a piece of land by cutting down trees and bushes (slashing) and then burning them (burning). The ash from the fire adds nutrients to the soil. Crops are grown on this cleared patch for a few years until the soil loses its fertility. After that, the farmer abandons the land and moves to a new patch to repeat the process. This method is primarily associated with the people of the Amazon rainforest in the chapter.
7. Why is population density high in the Ganga-Brahmaputra basin? How do the NCERT solutions break down the reasons for this?
The NCERT solutions for Chapter 6 explain the high population density in the Ganga-Brahmaputra basin by breaking it down into several geographical and economic factors. The key reasons provided are:
- Fertile Plains: The flat terrain and rich alluvial soil are ideal for agriculture, which can support a large population.
- Favourable Climate: The monsoon climate allows for the cultivation of multiple crops throughout the year.
- Abundant Water: The presence of major rivers like the Ganga and Brahmaputra ensures a consistent water supply for both domestic use and irrigation.
- Economic Opportunities: The fertile plains have led to the growth of numerous towns and cities, offering various job opportunities in agriculture, industry, and services.
The solutions help students frame a comprehensive answer by connecting these interconnected points.
8. How can one solve the question about the wildlife found in the Ganga-Brahmaputra plain using the NCERT solutions?
To solve questions about the wildlife in the Ganga-Brahmaputra plain, the NCERT Solutions guide you to identify the specific fauna mentioned in the textbook. The correct answer would involve listing animals adapted to this riverine plain and delta region. Key examples highlighted in the solutions include:
- Mammals like the Bengal tiger, elephants, deer, and monkeys.
- The one-horned rhinoceros, found specifically in the Brahmaputra plain.
- Aquatic life such as the Ganges river dolphin (also known as 'Susu'), rohu, catla, and hilsa fish.
- Various species of crocodiles and gharials found in the delta area.
9. The NCERT solutions explain why rainforests are depleting. Beyond development, how does this process specifically impact the topsoil as per the textbook?
The NCERT solutions emphasize a critical consequence of deforestation beyond just the loss of trees: the degradation of topsoil. The textbook explains that the dense canopy of the rainforest protects the ground from direct, heavy rainfall. When the trees are cleared, the protective layer is gone. As a result, the rain hits the ground with full force, washing away the thin layer of fertile topsoil. This process of soil erosion rapidly converts a once-lush area into a barren wasteland, making it difficult for the forest to regenerate naturally.











