« previous next »

Author Question: In the evolution of whelk-eating behavior in crows, which of the following was o (Read 353 times)

strangeaffliction

  • Hero Member
  • *****
  • Posts: 660
on: Oct 26, 2013
In the evolution of whelk-eating behavior in crows, which of the following was optimized through natural selection?
A) the average number of drops required to break the shell
B) the average height a bird flew to drop a shell
C) the average total energy used to break shells
D) the average size of the shells dropped by the birds
E) the average thickness of the shells dropped by the birds


Celeste

  • Hero Member
  • Posts: 588
Reply #1 on: May 30, 2019
C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Fox squirrel eating a nut Fox squirrel eating a nut
Effect of Inactivation of the Insula on Reinstatement of Drug-Seeking Behavior in Rats Effect of Inactivation of the Insula on Reinstatement of Drug-Seeking Behavior in Rats
Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
Contemporary Organizational Behavior: From Ideas to Action Contemporary Organizational Behavior: From Ideas to Action
Eating Disorders and Body Image (2 of 2) Eating Disorders and Body Image (2 of 2)
Pizza and eating disorders can be life threatening Pizza and eating disorders can be life threatening
Video: Hyperglycemia Animation

For a complete list of videos, visit our video library