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  2. Balance of trade - Wikipedia

    en.wikipedia.org/wiki/Balance_of_trade

    Balance of trade is the difference between the monetary value of a nation's exports and imports of goods over a certain time period. [1] Sometimes services are also considered but the official IMF definition only considers goods. The balance of trade measures a flow variable of exports and imports over a given period of time. The notion of the ...

  3. Marshall–Lerner condition - Wikipedia

    en.wikipedia.org/wiki/Marshall–Lerner_condition

    Similarly, if the economy starts out with a trade deficit and X - eM < 0, the elasticities have to add up to more than 1 for depreciation to improve the balance of trade, because the initial harmful price effect is bigger, so the quantity responses have to be bigger to compensate. Suppose initially the US exports 60 million tons of goods to ...

  4. Balanced trade - Wikipedia

    en.wikipedia.org/wiki/Balanced_trade

    Balanced trade is an alternative economic model to free trade. Under balanced trade, nations are required to provide a fairly even reciprocal trade pattern; they cannot run large trade deficits or trade surpluses. The concept of balanced trade arises from an essay by Michael McKeever Sr. of the McKeever Institute of Economic Policy Analysis.

  5. AP Biology - Wikipedia

    en.wikipedia.org/wiki/AP_Biology

    Advanced Placement (AP) Biology (also known as AP Bio) is an Advanced Placement biology course and exam offered by the College Board in the United States. For the 2012–2013 school year, the College Board unveiled a new curriculum with a greater focus on "scientific practices".

  6. Thirlwall's Law - Wikipedia

    en.wikipedia.org/wiki/Thirlwall's_Law

    Thirlwall's law (named after Anthony Thirlwall) states that if long-run balance of payments equilibrium on current account is a requirement, and the real exchange rate stays relatively constant, then the long run growth of a country can be approximated by the ratio of the growth of exports to the income elasticity of demand for imports (Thirlwall, 1979).

  7. Price–specie flow mechanism - Wikipedia

    en.wikipedia.org/wiki/Price–specie_flow_mechanism

    In practice, however, specie flows during the classical gold standard era failed to exhibit the self-corrective behavior described above. Gold finding its way back from surplus to deficit countries to exploit price differences was a painfully slow process, and central banks found it far more effective to raise or lower domestic price levels by lowering or raising domestic interest rates.

  8. AP Macroeconomics - Wikipedia

    en.wikipedia.org/wiki/AP_Macroeconomics

    Advanced Placement (AP) Macroeconomics (also known as AP Macro and AP Macroecon) is an Advanced Placement macroeconomics course for high school students that culminates in an exam offered by the College Board.

  9. Evolutionary tradeoff - Wikipedia

    en.wikipedia.org/wiki/Evolutionary_tradeoff

    In evolutionary biology, an evolutionary tradeoff is a situation in which evolution cannot advance one part of a biological system without distressing another part of it. In this context, tradeoffs refer to the process through which a trait increases in fitness at the expense of decreased fitness in another trait.