What are the prerequisites for the existence of a city good environment with water and a favorable climate advanced agricultural technology strong social organization all of the above?

What are the prerequisites for the existence of a city good environment with water and a favorable climate advanced agricultural technology strong social organization all of the above?

According to sociologist Gideon Sjoberg (1965), there are three prerequisites for the development of a city: First, good environment with fresh water and a favorable climate; second, advanced technology, which will produce a food surplus to support nonfarmers; and third, strong social organization to ensure social …

What is the human and environmental impact of e-waste?

As mentioned, electronic waste contains toxic components that are dangerous to human health, such as mercury, lead, cadmium, polybrominated flame retardants, barium and lithium. The negative health effects of these toxins on humans include brain, heart, liver, kidney and skeletal system damage.

What is the main cause for e-waste?

E-waste is generated as a result of any of the below-mentioned reasons: Upgrade and innovation in technology. Lifestyle changes. End of the intended usage.

Where does the majority of the e-waste end up?

Incineration Centres You might be surprised to know that all the discarded e-waste like computers, iPads, Laptops and mobile phones are not recycled. So, where does the majority of the e-waste end up? In the incineration centres! Yes, almost 80% of the e-waste ships to the developing and third world countries.

Why are e-waste hazardous?

Disposal of e-waste in landfills before treatment is hazardous to the environment. E-waste may leach toxic elements into the soil and water like acids and heavy metals from batteries and circuit boards. Consequently, these metals are mixed in surface water and groundwater, causing harmful effects on humans and animals.

Which is the following is the most toxic component of e-waste?

Explanation: The presence of elements like lead, mercury, arsenic, cadmium, selenium, hexavalent chromium, and flame retardants beyond threshold quantities make e-waste hazardous in nature.

What are the potential hazards of e-waste?

Potential environmental hazard Chips and other gold-plated Chemical stripping using nitric ● Acid contact with eyes , skin may result ● Hydrocarbons, heavy metals, compounds and hydrochloric acid along in permanent injury brominated substances etc.

Which hazardous waste is not found in e-waste?

Substances found in large quantities include epoxy resins, fiberglass, PCBs, PVC (poly vinyl chlorides), thermosetting plastics, lead, tin, copper, silicon, beryllium, carbon, iron and aluminium. Elements found in small amounts include cadmium, mercury and thallium.

Which of the following are the main contributors of the e-waste?

E-waste generated from discarded EEE is commonly divided into 3 main categories: large household appliances (refrigerators and washing machines), information technology (IT) and telecom (personal computers, monitors, and laptops), and consumer equipment (TVs, DVD players, mobile phones, mp3 players, and leisure and …

What is a good way to dispose of e-waste?

• Sell Your Electronics.
• Give Electronics to Certified E-Waste Recycler.
• Donate to NGOs.
• Donate to a Small College or Rural School.
• Sell Back to Manufacturers.

Can e-waste be hacked after it is thrown away?

Answer: 1. E-waste hacking emerges as a response to the designed obsolescence of electronic devices and operates by repairing and reusing discarded and obviated technologies. Waste is the object of hacks as well as the material condition of their possibility.

What is the e-waste problem?

Most e-waste still goes in the landfill But only about 25% of that was collected for recycling. The other 75% went to landfills and incinerators, despite the fact that hazardous chemicals in them can leach out of landfills into groundwater and streams, or that burning the plastics in electronics can emit dioxin.

Is there money in e-waste?

In terms of value, it is presently of Rs 25,000 crore industry which is expected to touch Rs 125,000 crores by 2020. Fortunately, the entire industry is presently untapped by the formal sector as required under the E-waste management rules of India.