The lowest trophic level of an ecosystem always includes___________

Nitrogen is an important component of _____________

More than normal denitrification __________the richness of soil.

An example of Carnivore plants is_______

Plants show competition for__________

Which one of the following in not a temporary parasite?

Which of the following in not an example of greenhouse gas?

In 1927_________ developed the concept of ecological pyramids.

In an ecosystem the flow of _____________ is on way, while_________ is/are constantly recycled.

Habitat destruction can result in a loss of _______________

In the food chain “grass- Rabbit-Fox-Bear-Mushroom”, how many types of decomposers are present?

Which of the following is the abiotic component of an ecosystem?

When we eat the onion, our trophic level is _________

The perfect cycle is ___________

The living organisms which cannot prepare their own food but obtain ready made food from others are called_______

According to estimate at the current rate of increase, the average global temperature will go upto by _____ in the next 100 years.

Fungi digest the dead organic matter with the help of _________

Nitrogenous waste includes_______

Water, soil, air, temperature, wind and sunlight are example of ___________

An organism that actively hunts other organisms is called____________

The self-sufficient unit of an environment that is formed as a result of interaction between its biotic community and its abiotic components is known as_____________

In 2003, a survey on tanneries in Kasur city showed that __________ of residents suffered from cancer infections of kidney or loss of eyesight.

At which trophic level in a food chain, carnivores get food?

________ atom is the principal building block of many kind of biomolecules.

Which one is not an example of abiotic factor?

Habitat is an example of _______

The materials flow from one trophic level to the next by means of ________

_______ get solar energy and transform it into chemical energy by the process of photosynthesis.

The temperature of Earth’s surface has increased________ per decade in the last 30 years

Since 1800, amount of CO₂ in atmosphere has increased about______

IPCC stands for _________

An epiphyte is an example of ___________

The consumers that eat animals flesh as well as plants and plants products are called_______

The type of symbiotic relationship in which one member get benefit and other is harmed is called___________

The base of food chain is always formed by____________

Upper layer of atmosphere is called ________

How many tanneries are operating in Kasur City?

Which form of Nitrogen is taken by the producers of the ecosystem?

In the food chain “tree-caterpillar-robin-hawk-coyote”, which is secondary consumer?

Living of nitrogen fixer bacteria in the root nodules of leguminous plants is an example of _____

Which one is an example of epiphyte?

Recycling of One Ton paper can save___________

The favorable variation tends to be ___________

Organisms that make their own food with help of sunlight, CO2 and H2O are called_________

The major process that brings carbon from atmosphere into living world is ___________

Which is an ectoparasite?

Which one of the following is not an endoparasite?

Abiotic component of ecosystem is _________________

Flow of energy is always ___________

Which is the breakdown of the proteins of dead organisms to ammonia?

Pakistan growth rate in1991 was _______

The thickness of biosphere is ______________

A group of organisms which can interbreed freely in nature to produce fertile offspring is called________

Organisms in the ecosystem that are responsible for the recycling of plant and animal wastes are_________

Scientists fear that sea level is rising upto ______ per year.

Which one of the following is not as example of fossil fuels?

When living and non-living interact to produce a stable system in which exchange of material with flow of energy takes place, it forms a/an_________

The utilization of nitrates by organisms is called___________

_______ people are at risk of dengue.

The conversion of ammonia to nitrates is carried out by soil bacteria. This process is called_____

The type of environment in which a particular species lives is called___________

The current level of urbanization in Pakistan is about __________ which is not high by global standards.

A symbiotic interaction in which both partners get benefits is ________

The type of symbiotic relationship in which one number get benefit and other is unaffected is called___________

Since 1800, amount of nitrous oxide has increased about_________

It is estimated that Maldives might become uninhabitable within________

A network of all the feeding relationship in an ecosystem is called________

Graphic representation of the number of individuals per unit area at various trophic levels of a food chain is called_____________

A relationship between two organisms in which individual of one species may kill and eat individuals of others species is called________________

A relationship between species in which both species benefit is called________

Identify the correctly matched pair________________

An aquarium is an example of ___________ecosystem.

A group of organisms, similar to one another, which can interbreed in nature and produce fertile offspring are called _______________

Which of the following organisms are decomposers?