« previous next »

Author Question: Among songbirds, a "crystallized" song is one that A) is beyond the range of hum (Read 494 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?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Guinea pigs "social groom" Guinea pigs "social groom"
Stages of Natural Birth "مراحل الولادة الطبيعية" Stages of Natural Birth "مراحل الولادة الطبيعية"
Historical Climate Change "تغير المناخ التاريخي" Historical Climate Change "تغير المناخ التاريخي"
The Galilean Moons "أقمار المشتري" The Galilean Moons "أقمار المشتري"
Peritoneum " الحوض" b Peritoneum " الحوض" b
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: Factors that increase metabolic rate and heat production

For a complete list of videos, visit our video library