Opponent-Process Theory of Color Vision Was Proposed by

question 61

Multiple Choice

Opponent-process theory of color vision was proposed by

• A)Hermann von Helmholtz.
• B)Thomas Young.
• C)Georges Seurat.
• D)Ewald Hering.

---

Definitions:

Flexible Exchange Rate

A rate of exchange that is determined by the international demand for and supply of a nation’s money and that is consequently free to rise or fall because it is not subject to currency interventions. Also referred to as a “floating exchange rate.”

Fixed Exchange Rate

A currency system where the value of a currency is pegged against another currency, a basket of currencies, or another measure of value.

Trade Deficits

A situation where a country's imports exceed its exports, indicating that it is buying more goods and services than it is selling abroad.

Current Account

Part of a nation's balance of payments encompassing the trade balance, net primary income, and net secondary income components.