« previous next »

Author Question: Which of these characteristics added most to vertebrate success in relatively dr (Read 614 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?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

A fossil of the first known feathered vertebrate, Archaeopteryx, which emerged in the Jurassic perio A fossil of the first known feathered vertebrate, Archaeopteryx, which emerged in the Jurassic perio
Large male size and mating success. Large male size and mating success.
Hormones and secondary sex characteristics Hormones and secondary sex characteristics
Principal Characteristics of REM and Slow-Wave Sleep Principal Characteristics of REM and Slow-Wave Sleep
Dried fruits often have sulfur dioxide or other sulfites added to them to preserve color and flavor Dried fruits often have sulfur dioxide or other sulfites added to them to preserve color and flavor
Sources and Actions of Vertebrate Hormones Sources and Actions of Vertebrate Hormones
Video: Muscle cell structures - actin, myosin and titin filaments

For a complete list of videos, visit our video library