The pH of the atmosphere is:
What percentage of oxygen and carbon dioxide exists in the ecosystem?
The result of acid deposition is:
An individual may die within 2-10 days after exposure to 500 ppm of the following air pollutant:
An association has been found between exposure to ____________________ by the inhalation route and lung cancer.
______________________ is the increasing concentration of toxic substances in organisms as trophic levels increase in a food chain or food web.
Which gas is produced in open dumps from the anaerobic decomposition of biodegradable waste?
Biotic component of the environment does not include:
Pakistan is divided into ________________ agro-ecological zones.
What is the order of waste management hierarchy, from most to least favored?
A wide variety of living organisms is called:
The set of ecosystems is called:
Of the following agents, the one that would not favor conversion of sulfur dioxide to sulfate species in the atmosphere is:
The "Ramsar Convention" is an international treaty for the conservation and protection of:
________________ often serve as an indicator for a threatened ecosystem.
The greenhouse effect in the atmosphere is produced due to:
NEQ was approved on:
Mangrove forests in Asia are largely concentrated in:
Acid rain is a result of:
A mutual relationship between two organisms, where both of them are benefiting from watching the other is called: