Speciation Often Occurs When a Habitat Becomes More Heterogeneous

question 58

Multiple Choice

Speciation often occurs when a habitat becomes more heterogeneous. In Lake Victoria different species of cichlids are found in different areas of the lake. The best explanation for this speciation is that

• A) natural selection favored different heritable variations in different parts of the lake.
• B) male cichlids that lived in deep water needed to be seen by females, so they became colorful.
• C) food was scarce in the lake, so some fish had to learn how to scrape algae, some had to learn to eat insects, and some had to learn to bite leaves.
• D) humans selected for many different traits in cichlids in order to market them to the aquarium trade.

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Definitions:

Mixed Message

Communication that contains conflicting or ambiguous information, often leading to misunderstanding or confusion.

Body Language

The nonverbal communication expressed through physical behaviors such as gestures, posture, and facial expressions, often conveying feelings or attitudes.

Interpersonal Space

The physical distance maintained between individuals during social interactions, often affecting communication and relationship dynamics.

Oral Communication

Involves expressing ideas, feelings, and information to others through spoken words, pivotal for effective interpersonal interactions and public speaking.