Impact of Agricultural and Industrial Practices on the Ecosystem

Air, water, soil, and noise pollution

The chapter identifies four main types of pollution: (1) Air pollution - harmful substances in the atmosphere from burning fuels and industrial activities, (2) Water pollution - contamination of water bodies making them unfit for use, (3) Soil pollution - degradation of soil quality due to chemicals and waste, and (4) Noise pollution - unwanted sounds causing disturbance. Each type affects different parts of our environment and has serious impacts on human health and ecosystem balance.

Composting

Composting is the correct method for disposing wet household waste like food scraps, vegetable peels, and fruit waste. In composting, wet waste is dumped into a pit or bin where it decomposes naturally to form rich organic manure. This manure can then be used for plants and gardens. Burning waste causes air pollution, throwing in rivers causes water pollution, and random burying can contaminate groundwater. Composting is eco-friendly and converts waste into useful organic fertilizer.

Planting different crops in different years by rotation to maintain soil fertility

Crop rotation involves planting different types of crops in the same field in different seasons or years in a systematic sequence. This practice helps maintain soil fertility naturally because different crops use and add different nutrients to the soil. For example, after growing wheat, farmers might plant legumes which add nitrogen to soil. This method reduces soil erosion, maintains organic matter, decreases dependence on chemical fertilizers, and keeps the soil healthy and productive for long periods.

Carbon dioxide

Carbon dioxide (CO2) is identified as the primary greenhouse gas responsible for global warming. When forests are cut down, there are fewer trees to absorb CO2 from the atmosphere. Additionally, industrial activities, burning of fossil fuels, and cement manufacturing release large amounts of CO2. This increased concentration of CO2 in the atmosphere traps heat from the sun, leading to global warming and climate change. Trees normally act as 'lungs of the Earth' by absorbing CO2 and releasing oxygen.