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How are humans and other lifeforms interconnected?
Humans and other organisms are deeply connected through intricate ecological webs, energy transfers and biogeochemical cycles. Plants produce the oxygen humans breathe and synthesize base nutrients, while insects and birds enable vital crop pollination. Microorganisms decompose organic waste to enriRead more
Humans and other organisms are deeply connected through intricate ecological webs, energy transfers and biogeochemical cycles. Plants produce the oxygen humans breathe and synthesize base nutrients, while insects and birds enable vital crop pollination. Microorganisms decompose organic waste to enrich soils for agriculture. Human health, shelter and industry rely directly on these ecosystem services, while our conservation efforts or environmental damage profoundly affect all wildlife populations.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessWhat is the importance of preserving various lifeforms and how can we contribute to their conservation?
Every species plays a specialized ecological role; losing even one can trigger trophic cascades and destabilize entire ecosystems. Biodiversity ensures genetic resilience, food security and medicinal discoveries essential for humanity. Individuals can conserve lifeforms by planting indigenous flora,Read more
Every species plays a specialized ecological role; losing even one can trigger trophic cascades and destabilize entire ecosystems. Biodiversity ensures genetic resilience, food security and medicinal discoveries essential for humanity. Individuals can conserve lifeforms by planting indigenous flora, minimizing plastic usage, practicing sustainable consumption, supporting community afforestation projects, preventing illegal wildlife trade and advocating for well-managed wildlife sanctuaries, biosphere reserves and strict biodiversity protection laws globally.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessWhat types of activities do you think people in desert regions generally undertake to sustain their households and livelihood?
To survive harsh, arid environments, desert communities engage in pastoralism, herding hardy livestock such as camels, goats and sheep for milk, wool and meat. Where water is accessible through oases or irrigation canals, they cultivate drought-tolerant crops like millets, pulses and dates. FurthermRead more
To survive harsh, arid environments, desert communities engage in pastoralism, herding hardy livestock such as camels, goats and sheep for milk, wool and meat. Where water is accessible through oases or irrigation canals, they cultivate drought-tolerant crops like millets, pulses and dates. Furthermore, they generate household revenue through intricate textile weaving, leathercraft, pottery, trading, salt or mineral extraction and eco-cultural tourism ventures.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessThe age of a father is equal to the sum of the ages of his four children. After 20 years, the sum of the ages of the children will be twice the age of the father. Find the age of the father.
Let the father's present age be F and the sum of the ages of his four children be S, so F = S. In 20 years, the father's age becomes F + 20, while each child ages 20 years, increasing their sum by 4 × 20 = 80 to S + 80. The condition gives S + 80 = 2(F + 20). Substituting S = F yields F + 80 = 2F +Read more
Let the father’s present age be F and the sum of the ages of his four children be S, so F = S. In 20 years, the father’s age becomes F + 20, while each child ages 20 years, increasing their sum by 4 × 20 = 80 to S + 80. The condition gives S + 80 = 2(F + 20). Substituting S = F yields F + 80 = 2F + 40, resulting in F = 40 years.
For more NCERT Solutions of Class 9 Maths Ganita Manjari Part 2 Chapter 13 Two Variables, One Line Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-13/
See lessA train moving with uniform speed for a certain distance takes 6 hours less if its speed is increased by 6 km/hour. It would have taken 6 hours more had its speed been decreased by 4 km/hour. Find the distance travelled and the speed of the train.
Let uniform speed be s km/h and scheduled time be t hours, with distance d = st. From (s + 6)(t − 6) = st, expansion gives −6s + 6t − 36 = 0 or t − s = 6. From (s − 4)(t + 6) = st, expansion gives 6s − 4t − 24 = 0 or 3s − 2t = 12. Substituting t = s + 6 into the second equation yields s = 24 km/h, tRead more
Let uniform speed be s km/h and scheduled time be t hours, with distance d = st. From (s + 6)(t − 6) = st, expansion gives −6s + 6t − 36 = 0 or t − s = 6. From (s − 4)(t + 6) = st, expansion gives 6s − 4t − 24 = 0 or 3s − 2t = 12. Substituting t = s + 6 into the second equation yields s = 24 km/h, t = 30 hours and distance d = 24 × 30 = 720 km.
For more NCERT Solutions of Class 9 Maths Ganita Manjari Part 2 Chapter 13 Two Variables, One Line Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-13/
See less