Photosynthetic Organisms Are Unique to Most Ecosystems Because They

question 3

Multiple Choice

Photosynthetic organisms are unique to most ecosystems because they

• A) synthesize organic compounds they obtain from decaying heterotrophs.
• B) synthesize inorganic compounds from organic compounds.
• C) use light energy to synthesize organic compounds.
• D) use chemical energy to synthesize organic compounds.
• E) convert light energy into matter.

---

Definitions:

Profit-Maximizing Rule

A principle stating that profit maximization occurs when a firm expands output until marginal cost is equal to marginal revenue.

MR = MC

The condition for profit maximization in economic theory, where marginal revenue (MR) equals marginal cost (MC).

Economic Profit

The discrepancy across total turnover and total spendings, including expenses both explicit and implicit.

Profit Per Unit

The profit earned for each unit of a good or service sold, calculated by subtracting the cost per unit from the selling price per unit.