The oxides of nitrogen (NO, NO₂) are dissolved in water to form

The number of tanneries in Kasur city is

All the animals, Fungi, protozoa and many bacteria are examples of

The type of symbiosis the smaller partner harms the larger partner and derives food from its body is called

The building block of different types of bio-molecules is

The breakdown of proteins of dead organisms to ammonia is

The term "Deforestation" means

The interaction between different species and the members of species lives together for shorter or longer periods is called

The name of the upper layer of the atmosphere is

The plantation of new plants on non-forest areas is classified as

The parasites that live inside the host body to get the shelter and food are called

The concept of ecological pyramids is first proposed by

The non-living factors present in the ecosystem are called

Nitrogen fixation is the conversion of nitrogen gas to

The organisms who kills, attacks and feeds others are called

The interactions between the same species members are known as

A thin layer around the earth is made by

The excess burning of fossil fuels leads to increased carbon dioxide which results in

The ecological pyramid concept was proposed by Charles Elton in

The ultraviolet rays in the radiations of the sun are absorbed by

During the metabolic activities, the stored energy in the tissues of plants is transformed into

The natural gas, coal, and petroleum are all examples of

Considering the pyramid of numbers, the consumers that are of minimum in number and larger are called

The ecosystem in which maximum biomass is present in the form of producers is called

The organisms form the basis of ecosystem

The representation of the total number of individuals for per unit area at different trophic levels graphically is classified as

The organisms that are capable to synthesize organic compounds into simple raw materials are called

The floating photosynthetic organisms are considered as main producers in

The forests clearing by the humans or natural causes are classified as

The interaction between abiotic components and biotic community is classified as