« previous next »

Author Question: Which of these characteristics added most to vertebrate success in relatively dr (Read 628 times)

federox

  • Sr. Member
  • ****
  • Posts: 308
on: Aug 8, 2013
Which of these characteristics added most to vertebrate success in relatively dry environments?
A) the shelled, amniotic egg
B) the ability to maintain a constant body temperature
C) two pairs of appendages
D) bony scales
E) a four-chambered heart


theo

  • Hero Member
  • *****
  • Posts: 698
Reply #1 on: Aug 10, 2013
Answer has to be A, 100% :D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Specialized values and interests are two of the characteristics that mark subcultures. What values ... Specialized values and interests are two of the characteristics that mark subcultures. What values ...
Splash blending occurs when the ethanol is added to a tanker with gasoline and is mixed as the ... Splash blending occurs when the ethanol is added to a tanker with gasoline and is mixed as the ...
Finding Added Sugars on the Label A food Finding Added Sugars on the Label A food
Sugar: Finding Added Sugars on the Label A food Sugar: Finding Added Sugars on the Label A food
Nonfat Milk with added protein Nonfat Milk with added protein
Success is not always what you see Success is not always what you see
Video: Embryonic development - Week 4

For a complete list of videos, visit our video library