If Each Breeding Pair of Elephants Produces 6 Offspring During

question 16

Multiple Choice

If each breeding pair of elephants produces 6 offspring during a 90-year life span, in 750 years, a single pair of elephants will have given rise to a population of 19 million elephants. Yet elephants have not overrun the planet. WHY?

• A) Elephants have a niche that expands with the population
• B) Elephants produce more offspring than will survive to maturity
• C) Most elephants are kept in captivity (circus & zoo) and not allowed to reproduce
• D) Individual elephants in a population exhibit no variation, reducing their reproductive success
• E) Elephants have become geographically separated into separate species that cannot interbreed

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Definitions:

Main Channels

The primary paths or courses taken by a river or stream within its bed, directing the majority of flow and often deeper than adjacent areas.

Discharge

The volume of water flowing through some stretch of a river or stream per unit of time.

Rate of Flow

The velocity at which a fluid (liquid or gas) moves through a channel, pipe, or porous medium.

Channel

A natural or artificial waterway through which water flows.