The Causative Agent of Lyme Disease Is ________, Which Is

question 72

Multiple Choice

The causative agent of Lyme disease is ________, which is carried primarily by the ________.

• A) a flavivirus / Ixodes sp. (deer tick)
• B) Yersinia pestis / Xenopsylla cheopis (rat flea)
• C) Rickettsia prowazekii / Culex species (mosquito)
• D) Borrelia burgdorferi / Ixodes sp. (deer tick)

---

Definitions:

Marginal Revenue Curve

A graph that displays how additional revenue is affected by the sale of one more unit of a product or service.

Downsloping

describes a trend or curve that goes downward, often used in economics to describe demand curves where price decreases lead to an increase in quantity demanded.

Economic Profits

Profits exceeding the opportunity costs of a venture or investment, accounting for both explicit and implicit costs.

Normal Profits

The level of profit necessary to keep a firm in an industry, equating to the opportunity cost of capital and entrepreneurship.