Final answer:
Discarding old computers in landfills causes environmental pollution due to the release of toxic chemicals and contributes to the problem of e-waste. The non-biodegradable materials add to landfill volume, and incineration releases harmful pollutants into the air.
Step-by-step explanation:
The discarding of old computers in a landfill can significantly affect the environment. These electronic devices contain numerous toxic chemicals and substances like lead, mercury, and cadmium, which can leach into the groundwater and soil, causing environmental pollution and posing health risks to humans and wildlife. Additionally, the non-biodegradable materials, such as plastics and metals, in these old computers contribute to the growing problem of e-waste, which is the fastest-growing segment of garbage production worldwide. Improper disposal practices, such as dumping or incineration, can release carcinogens and other harmful pollutants into the air, compounding the problem of air pollution and smog. Hence, e-waste contributes to both soil and water pollution and increases the burden on landfill space, while also impacting air quality upon burning.