Environmental Issues
Environmental Issues: Overview
This Topic covers sub-topics such as Ozone Layer, Ozone Layer Depletion, United Nations Environment Programme, Chlorofluorocarbons, Effects of Ozone Layer Depletion, Non-biodegradable Substances, Biodegradable Substances and, Sustainable Ecosystem
Important Questions on Environmental Issues
Identify cause and effect
| Issue | Cause | Effect |
| Environmental pollution |
Why is it necessary to manage our garbage?
Gas A, found in the upper layers of the atmosphere, is a deadly poison but is essential for all living beings. The amount of this gas started declining sharply in the 1980s.
a. Identify Gas A. How is it formed at higher levels of the atmosphere?
b. Why is it essential for all living beings? State the cause for the depletion of this gas.
DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer.
A sustainable ecosystem is able to maintain its full functions and properties.
What kind of ecosystem is known as sustainable?
Name the process that involves the burning of a substance at a high temperature (of more than 1000 °C) to form ash.
Organic wastes which can be readily decomposed by micro-organism are called biodegradable.
Where do we get Plastic from? (Wood/Petroleum/ Coal)
Diesel and petrol which are the major source of fuel for transport vehicles accounts for _____ percent of the pollution.
July was the hottest month recorded with a temperature rise of degrees higher relative to the twentieth century global warming temperature.
_____ used to treat fever in humans and cattle but is toxic for vulture and is a major cause for drastic reduction in their number in recent years.
Biomagnification is any concentration of a toxin, such as pesticides, in the tissues of tolerant organisms at successively higher levels in a food chain.
How much percent of the energy is transferred to the next trophic level?
The zero foot print plan of Tesla lay emphasis on using _____ to charge their electric cars.
State the term for things that rot and mix with the soil. (Biodegradable/Non-biodegradable)
The UV radiation from the Sun is likely to cause ______ in humans.
