Environmental Impact of Human Activities_Unsolved Paper
Chapter: Our Environment | Topic: Environmental Impact of Human Activities
ENVIRONMENTAL IMPACT OF HUMAN ACTIVITIES_UNSOLVED PAPER
Topic: Environmental Impact of Human Activities
Q1. Which human activity can directly contribute to an increase in the amount of carbon dioxide in the atmosphere?
- Planting more trees
- Burning fossil fuels
- Composting kitchen waste
- Protecting forests
Q2. Which situation is most likely to disturb the balance of an ecosystem?
- Protecting natural habitats
- Excessive use of chemical pesticides
- Planting native trees
- Conserving water resources
Q3. A factory releases untreated wastewater into a nearby river. Which environmental component is most directly affected first?
- Water
- Sunlight
- Wind
- Soil minerals only
Q4.Which human activity is most closely associated with the destruction of natural habitats?
- Deforestation for construction
- Rainwater harvesting
- Recycling paper
- Wildlife protection
Q5. Why can excessive use of pesticides be harmful to organisms in an ecosystem?
- They always increase biodiversity
- They may enter food chains and affect organisms
- They immediately increase soil fertility
- They prevent all forms of pollution
Q6. Which action would be the most environmentally responsible choice for a student travelling a short distance to school?
- Using a vehicle alone every day
- Walking or using a bicycle when practical
- Burning waste before leaving home
- Leaving electrical appliances switched on
Short questions
Q1. What is meant by the environmental impact of human activities? Give one example of such an impact.
Q2. How can deforestation affect the balance of an ecosystem? Mention any two effects.
Q3. Why does excessive use of fossil fuels create an environmental concern?
Q4. A student leaves the classroom lights and fans switched on during lunch break even when nobody is present. Explain how such a small habit can have an environmental impact.
Q5. How can untreated industrial waste entering a water body affect organisms living in that ecosystem?
Q6. In a farming area, pesticides are used repeatedly in large quantities to control insects. What environmental problems may arise from such excessive use?
Q1. Explain how human activities such as deforestation, industrialisation and excessive use of natural resources can disturb ecosystems. Discuss their possible effects on different organisms and environmental components.
Q2. Describe the relationship between human activities and different forms of environmental pollution. Explain how pollution of air, water and soil can influence living organisms and ecological balance.
Q3. A rapidly developing town is experiencing increasing construction, traffic, waste generation and loss of green spaces. Analyse how these activities may affect the local environment and suggest responsible practices that could reduce their harmful impact.
Q1.
A residential area uses 240 litres of water for cleaning and other daily activities in one day. After adopting water-saving practices, its daily use decreases by 15%.
Calculate:
a) The amount of water saved per day.
b) The new daily water consumption.
Q2. A school records the number of disposable plastic items used during a week:
Calculate:
a) The total number of disposable plastic items used during the week.
b) The average number of items used per day.
Q3. A community survey finds that out of 500 households, 320 households have started using at least one environment-friendly practice, such as reducing plastic use, saving electricity or using public transport.