« previous next »

Author Question: Among songbirds, a "crystallized" song is one that A) is beyond the range of hum (Read 470 times)

penza

  • Hero Member
  • *****
  • Posts: 1,022
on: Oct 27, 2013
Among songbirds, a "crystallized" song is one that
A) is beyond the range of human hearing.
B) is perfected by juveniles.
C) extremely young chicks sing.
D) is a perfected species-specific song.
E) warns of predators.


Celeste

  • Hero Member
  • Posts: 588
Reply #1 on: Sep 1, 2019
D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Uranus's southern hemisphere in approximate natural colour (left) and in shorter wavelengths (r Uranus's southern hemisphere in approximate natural colour (left) and in shorter wavelengths (r
Population Ecology "البيئة السكان" Population Ecology "البيئة السكان"
Soil texture "تركيبة التربة" Soil texture "تركيبة التربة"
Esophagus "المريء" Esophagus "المريء"
Stereotyping "نمطية" : Wedad Lootah Stereotyping "نمطية" : Wedad Lootah
Alpine tundra. Low-growing, hardy plants at a high altitude in Washington’s Cascade range. Alpine tundra. Low-growing, hardy plants at a high altitude in Washington’s Cascade range.
Video: Major Elements in Biological Molecules: Nucleic acids

For a complete list of videos, visit our video library