Hero asked in Science & MathematicsBiology · 7 years ago

Science Revision Craming (Exam Tomorrow)?

I need to know-


-Body Systems


-Injections and Vaccinations



I think that's it please help and explain these topics in plain simple English unlike my teacher :D


I'm in grade 9

2 Answers

  • 7 years ago
    Favorite Answer

    Homeostasis: maintenance of equilibrium of and internal environment.

    Body systems:Body systems are an organized group of tissue that forms a particular function. These functions work with other systems in the body. Some of the main systems of the body are digestive, circulatory, nervous, respiratory and muscular

    Read more: http://www.ehow.com/about_5384987_definition-body-...

    Diseases: A pathological condition of a part, organ, or system of an organism resulting from various causes, such as infection, genetic defect, or environmental stress, and characterized by an identifiable group of signs or symptoms.

    Injections and vaccines: injections are meds that are meant to treat whatever may be wrong with you. injections are used to administer insulin for diabetic people.

    Vaccines: these are usually a small dose of the bacteria or disease causing organism that will help build up immunity against it. The vaccine contains such a small amount of the harmful substances that it will not cause harm to the individual.

    Ecosystems: this consists of biotic(living) and abiotic( non- living) factors. the types of organisms that inhabit an area of specific climatic conditions. its all the factors that allows a community to function in its surroundings.

    Ecology: this relates to the interaction of organism in their environment.

    Source(s): eHow.com
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  • Homeostasis = keeping constant internal environment by balancing body inputs and body outputs.

    basically, balancing the levels of the body.

    So,you need to balance the level of carbon dioxide, water and temperature.

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