« previous next »

Author Question: In the evolution of whelk-eating behavior in crows, which of the following was o (Read 347 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?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Variation in the rate of evolution as a function of the strength of selection, assuming genetic drif Variation in the rate of evolution as a function of the strength of selection, assuming genetic drif
Evolution of tetrapod visual opsins Evolution of tetrapod visual opsins
evolution evolution
Mutations in the MAOA gene cosegregate with aggressive behavior Mutations in the MAOA gene cosegregate with aggressive behavior
Evolution of genes derived from the cyanobacteria-like endosymbiont Evolution of genes derived from the cyanobacteria-like endosymbiont
One hypothesis for the evolution of the eukaryotes One hypothesis for the evolution of the eukaryotes
Video: Dendrite Animation

For a complete list of videos, visit our video library