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  2. Earth Day - Wikipedia

    en.wikipedia.org/wiki/Earth_Day

    Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globally by EARTHDAY.ORG (formerly Earth Day Network) [ 1] including 1 billion people in more than 193 countries. [ 2][ 1][ 3] In 1969 at a UNESCO Conference in San ...

  3. Worksheet - Wikipedia

    en.wikipedia.org/wiki/Worksheet

    A worksheet, in the word's original meaning, is a sheet of paper on which one performs work. They come in many forms, most commonly associated with children's school work assignments, tax forms, and accounting or other business environments. Software is increasingly taking over the paper-based worksheet.

  4. Human impact on the environment - Wikipedia

    en.wikipedia.org/wiki/Human_impact_on_the...

    Society portal. v. t. e. Human impact on the environment (or anthropogenic environmental impact) refers to changes to biophysical environments [ 1] and to ecosystems, biodiversity, and natural resources [ 2] caused directly or indirectly by humans. Modifying the environment to fit the needs of society (as in the built environment) is causing ...

  5. Teaching method - Wikipedia

    en.wikipedia.org/wiki/Teaching_method

    Teaching method. A teaching method is a set of principles and methods used by teachers to enable student learning. These strategies are determined partly by the subject matter to be taught, partly by the relative expertise of the learners, and partly by constraints caused by the learning environment. [ 1] For a particular teaching method to be ...

  6. Biology - Wikipedia

    en.wikipedia.org/wiki/Biology

    Biochemistry is the study of chemical processes within and relating to living organisms. Molecular biology is the branch of biology that seeks to understand the molecular basis of biological activity in and between cells, including molecular synthesis, modification, mechanisms, and interactions.

  7. Earthquake prediction - Wikipedia

    en.wikipedia.org/wiki/Earthquake_prediction

    Earthquake prediction is a branch of the science of seismology concerned with the specification of the time, location, and magnitude of future earthquakes within stated limits, [ 1][ a] and particularly "the determination of parameters for the next strong earthquake to occur in a region". [ 2] Earthquake prediction is sometimes distinguished ...

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