Physiological Ecologists Study

question 25

Multiple Choice

Physiological ecologists study

• A) nutrient cycling and energy flow through ecosystems.
• B) exchanges of materials, energy, and organisms between communities.
• C) physiological and anatomical mechanisms by which organisms deal with variation in their physical and chemical environment.
• D) physiological and anatomical mechanisms by which organisms deal with variation in their social environment.
• E) None of the choices are correct.

---

Definitions:

Variable Costs

Costs that vary directly with the level of production output, such as raw materials and hourly labor expenses.

Output

The quantity of output generated by an individual, device, or sector.

Total Variable Costs

The sum of expenses that change in proportion to the production volume or level of activities in a business.

Firm Produces

The process where a business uses its resources to create goods or services that can be sold in the market.