Know Your Environment – Level 2

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    Changes in which of the following biotic factors will result in a change of an ecosystem’s structure and composition

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    Both biotic and abiotic factors are related to each other in an ecosystem, and if one factor is changed or removed, it can affect the entire ecosystem. Nutrient availability is an important factor because they directly affect how organisms survive.

    A symbiotic relationship exists between two organisms of different species. If only one organism benefits from the relationship and the other is harmed, the relationship is called

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    Parasitism is generally defined as a relationship between the two living species in which one organism is benefited at the expense of the other. The organism that is benefitted is called the parasite, while the one that is harmed is called the host.

    What is 'an interacting group of individuals of the same species'?

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    Population is defined as a group of individuals of the same species, plant or animal, inhabiting a given area. Many such populations that are interacting with each other together form the community.

    What is the single most important factor contributing to losing or creating endangered species?

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    Habitat loss is the primary cause of higher extinction rates. Other causes include habitat changes, over-exploitation of wildlife for commercial purposes, the introduction of invasive species, pollution, and the spread of diseases.

    In addition to producers and consumers, healthy communities must have ________, bacteria and fungi which recycle detritus.

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    Decomposers play a critical role in the flow of energy through an ecosystem. They break down dead organisms into simpler inorganic materials, making nutrients available to primary producers.

    An area where an organism finds food, shelter and water in a specific arrangement

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    Habitat: A home where a plant or animal finds food, water, shelter, and space to survive.

    Sound becomes hazardous noise pollution at decibels.

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    Sound above 80 dB (in decibels) is considered hazardous noise pollution.

    Almost 99% of clean air consists of two gases which are

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    Nitrogen and oxygen are the two main gases in our atmosphere. 78% is nitrogen and 21% is oxygen. The remaining 1% mostly contains argon, carbon dioxide, and several other gases like hydrogen, helium, neon, krypton, xenon, methane, ozone, and water vapour.

    Ozone layer is being depleted by

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    Gaseous chlorofluorocarbons (CFCs) can deplete the ozone layer when they slowly rise into the stratosphere, are broken down by strong ultraviolet radiation, release chlorine atoms, and then react with ozone molecules.

    Spraying of DDT on crops causes pollution of

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    The agricultural runoff that contains DDT when flows into the water body results in water pollution and it causes the destruction of aquatic flora and fauna. Thus, spraying of DDT results in soil and water pollution.

    What type of light bulbs should be used if natural daylight is not an option?

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    Fluorescent Lights are daylight-equivalent and cannot be put on a dimmer. There are many types of fluorescents and they typically produce more light and last longer than incandescent.

    Using disposable paper cups is much better than washing mugs after each use.

    Correct! Wrong!

    Paper cups end up in the landfill. This is due to the quality of paper with the inner lining of wax or plastic making them difficult to recycle.

    Know Your Environment - Level 2
    Get environmentally aware!

    We do not have Planet B!!
    Environmental conservation matters!

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