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  2. List of Schedule I controlled substances (U.S.) - Wikipedia

    en.wikipedia.org/wiki/List_of_Schedule_I...

    This is the list of Schedule I controlled substances in the United States as defined by the Controlled Substances Act. [1] The following findings are required for substances to be placed in this schedule: [2] The drug or other substance has a high potential for abuse.

  3. Biogeochemical cycle - Wikipedia

    en.wikipedia.org/wiki/Biogeochemical_cycle

    The slow cycle operates through rocks, including volcanic and tectonic activity. There are fast and slow biogeochemical cycles. Fast cycle operate in the biosphere and slow cycles operate in rocks. Fast or biological cycles can complete within years, moving substances from atmosphere to biosphere, then back to the atmosphere.

  4. List of Schedule 1 substances (CWC) - Wikipedia

    en.wikipedia.org/wiki/List_of_Schedule_1...

    The Schedule 1 list is one of three lists. Chemicals which are feasible to use as weapons, and their precursors, but which have legitimate applications as well are listed in Schedule 2 (small-scale applications) and Schedule 3 (large-scale applications). The use of Schedule 1, 2, or 3 chemicals as weapons is banned by the Convention.

  5. Schedules of substances annexed to the Chemical Weapons ...

    en.wikipedia.org/wiki/Schedules_of_substances...

    Schedule 2 [6] contains substances that pose a significant risk for use as a chemical weapon, or as a precursor of a substance from List 1 or List 2, part A. These substances also have a limited use in not large quantities for other purposes than a chemical weapon. In large quantities, there is a good chance that they are intended for use as a ...

  6. Marine biogeochemical cycles - Wikipedia

    en.wikipedia.org/wiki/Marine_biogeochemical_cycles

    Water is the medium of the oceans, the medium which carries all the substances and elements involved in the marine biogeochemical cycles. Water as found in nature almost always includes dissolved substances, so water has been described as the "universal solvent" for its ability to dissolve so many substances.

  7. Water cycle - Wikipedia

    en.wikipedia.org/wiki/Water_cycle

    In doing so, the water goes through different forms: liquid, solid and vapor. The ocean plays a key role in the water cycle as it is the source of 86% of global evaporation. [2] The water cycle involves the exchange of energy, which leads to temperature changes. When water evaporates, it takes up energy from its surroundings and cools the ...

  8. DEA list of chemicals - Wikipedia

    en.wikipedia.org/wiki/DEA_list_of_chemicals

    It also maintains List I of chemicals and List II of chemicals, which contain chemicals that are used to manufacture the controlled substances/illicit drugs. The list is designated within the Controlled Substances Act [1] but can be modified by the U.S. Attorney General as illegal manufacturing practices change.

  9. Schedule 1 - Wikipedia

    en.wikipedia.org/wiki/Schedule_1

    Schedule 1 may refer to: List of Schedule 1 substances (CWC) First Schedule of the Constitution of India, defining the states and union territories of India; Schedule I Controlled Substances within the US Controlled Substances Act; Schedule I Controlled Drugs and Substances within the Canadian Controlled Drugs and Substances Act