« previous next »

Author Question: Among songbirds, a "crystallized" song is one that A) is beyond the range of hum (Read 526 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?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Guinea pigs "social groom" Guinea pigs "social groom"
Hannah Höch, Study for "Cut with the Kitchen Knife Dada through the Last Weimar Beer Belly ... Hannah Höch, Study for "Cut with the Kitchen Knife Dada through the Last Weimar Beer Belly ...
Survivorship curves "منحنيات البقاء على قيد الحياة" Survivorship curves "منحنيات البقاء على قيد الحياة"
Earth’s Biomes "الأرض الحيوية" Earth’s Biomes "الأرض الحيوية"
Cauliflower "قرنبيط" Cauliflower "قرنبيط"
General Mathematics - Finding the Range of a Function General Mathematics - Finding the Range of a Function
Video: Male Reproductive System - Testosterone

For a complete list of videos, visit our video library