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2. Mesocosm - Wikipedia

   en.wikipedia.org/wiki/Mesocosm

   A tomato greenhouse in the Netherlands. The advantage of mesocosm studies is that environmental gradients of interest (e.g., warming temperatures) can be controlled or combined to separate and understand the underlying mechanism(s) affecting the growth or survival of species, populations or communities of interest.

3. Worksheet - Wikipedia

   en.wikipedia.org/wiki/Worksheet

   The form comes with two worksheets, one to calculate exemptions, and another to calculate the effects of other income (second job, spouse's job). The bottom number in each worksheet is used to fill out two if the lines in the main W4 form. The main form is filed with the employer, and the worksheets are discarded or held by the employee.

4. Ecosystem - Wikipedia

   en.wikipedia.org/wiki/Ecosystem

   An ecosystem (or ecological system) is a system that environments and their organisms form through their interaction. [2]: 458 The biotic and abiotic components are linked together through nutrient cycles and energy flows. Ecosystems are controlled by external and internal factors.

5. Coin flipping - Wikipedia

   en.wikipedia.org/wiki/Coin_flipping

   Tossing a coin. Coin flipping, coin tossing, or heads or tails is the practice of throwing a coin in the air and checking which side is showing when it lands, in order to randomly choose between two alternatives. It is a form of sortition which inherently has two possible outcomes. The party who calls the side that is facing up when the coin ...

6. Norway stops deep-sea mining, for now - AOL

   www.aol.com/news/norway-stop-deep-sea-mining...

   OSLO (Reuters) -A small leftwing environmentalist political party in Norway succeeded on Sunday in blocking plans to mine the sea bed at the bottom of the Arctic, by demanding the government scrap ...

7. Forest ecology - Wikipedia

   en.wikipedia.org/wiki/Forest_ecology

   Every parameter is scored between 0 and 5 for each considered species, and then a global mean value calculated. A value above 3.5 is considered high, below 3.0 low, and intermediate for those in between. In this study Fagus sylvatica has a score of 3.82, Fraxinus excelsior 3.08 and Juglans regia 2.92; and are examples of the three categories.