NCERT Solution for Class 10 Science Chapter 15
Our Environment,
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Exercises Questions
Page No-265
Questions No-7
What are the problems caused by the non-biodegradable wastes that we generate?
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Non-biodegradable wastes cannot be broken-down into simpler substances. Their volume keeps on increasing creating the problem of their safe disposal. Some of the non-biodegradable wastes like heavy metals and pesticides enter into the food chain and increases in the upper trophic levels. Non-biodegradable wastes reduce the soil fertility by changing the natural pH balance.
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The problems caused by the non-biodegradable wastes are
1. If the quantity of non-biodegradable matter increases in the nature then bio-magnification of poisonous chemicals in our body increases.
2 If the non-biodegradal waste keeps on increasing there will not be left any substance for new organisms.
3. The increasing quantity of non biodegradable waste will cause imbalance of ecosystem.
Non biodegradable wastes cause many problems like –
(i)Enter in food chain and damage the organisms of highest trophic level.
(ii)Cause toxic effects to living organisms and may cause pollution like soil pollution, water pollution and air pollution in the environment.
(iii)Reduced crop yield.
(iv)Increase Biological oxygen demand.
Non-biodegradable wastes pose several environmental and health problems due to their persistence in the environment. Here are some of the key issues caused by non-biodegradable waste:
1. Environmental Pollution:
. Land Pollution: Non-biodegradable waste, particularly plastics and certain metals, can accumulate in landfills, leading to soil pollution.
. Water Pollution: When non-biodegradable materials like plastics enter water bodies, they can persist for a long time, causing water pollution. This can harm aquatic life and disrupt ecosystems.
2. Wildlife Impact:
. Animals often mistake non-biodegradable items for food and ingest them. This can lead to various health issues, including blockages in their digestive systems, malnutrition, and, in some cases, death.
3. Long Decomposition Time:
. Non-biodegradable materials, such as plastic, can take hundreds or even thousands of years to decompose. This leads to the accumulation of waste in landfills and the environment, contributing to the global waste crisis.
4. Toxicity:
. Some non-biodegradable materials, especially certain types of plastics, may release toxic substances as they break down over time. This can contaminate soil and water, posing a threat to both the environment and human health.
5. Resource Depletion:
. The production of non-biodegradable materials often involves the extraction and consumption of finite natural resources. This can contribute to resource depletion and environmental degradation.
6. Microplastic Pollution:
. Plastics can break down into smaller particles known as microplastics, which are pervasive in the environment. These microplastics can enter the food chain, impacting both terrestrial and aquatic ecosystems and potentially posing risks to human health.
7. Aesthetic and Recreational Impact:
. Accumulation of non-biodegradable waste in public spaces, beaches, and recreational areas diminishes their aesthetic value and can discourage tourism. It also poses a threat to activities such as swimming, boating, and fishing.
8. Greenhouse Gas Emissions:
. The production and disposal of non-biodegradable materials contribute to greenhouse gas emissions. For instance, the incineration of plastics can release harmful gases, adding to air pollution and climate change.
Addressing the issues associated with non-biodegradable waste requires a combination of waste reduction, recycling, proper waste management practices, and the development of more sustainable materials. Public awareness and responsible consumption play crucial roles in mitigating the impact of non-biodegradable waste on the environment.