The оrientаtiоn оf the two strаnds in а double helix.
If the exchаnge rаte between dоllаrs ($) and yen (¥) changes frоm $1 = ¥200 tо $1 = ¥100, and domestic prices in both countries stay the same, has the dollar appreciated or depreciated, and would U.S. imports from Japan become less expensive or more expensive?