Why Is It So Difficult for Scientists to Know How

question 61

Multiple Choice

Why is it so difficult for scientists to know how many species have already been described?

• A) Scientific journals do not publish accounts of new species.
• B) There isn't one location for cataloguing all species.
• C) Scientists are too busy testing hypotheses to investigate the number of species on Earth.
• D) Many species are microscopic, so they are difficult to study.

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Definitions:

Demand for Imports

The desire and ability of a country to purchase goods and services from other countries.

Floating Exchange Rates

A system in which the value of a currency is determined by the forex market based on supply and demand relative to other currencies, unlike fixed exchange rates that are tied to a physical commodity or another currency.

Gold Convertible

A financial system where a country's currency has a fixed value in terms of gold, allowing it to be exchanged for a specified amount of gold.

Balance-of-Payment Deficits

A situation in the balance of payments where the payments made by a country for its imports, investments abroad, and other outflows are greater than the inflows from exports, foreign investments, etc.