« previous next »

Author Question: Which of these characteristics added most to vertebrate success in relatively dr (Read 631 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?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

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.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Organization of the vertebrate nervous system. Organization of the vertebrate nervous system.
Representative vertebrate circulatory systems. Representative vertebrate circulatory systems.
Success Poster Success Poster
How Solid Fats and Added Sugars Fit into a Healthy Diet How Solid Fats and Added Sugars Fit into a Healthy Diet
Consider an aqueous solution of calcium nitrate added to an aqueous solution of sodium ... Consider an aqueous solution of calcium nitrate added to an aqueous solution of sodium ...
Characteristics of Various Depths of Burns Characteristics of Various Depths of Burns
Video: Metabolic Rate, Heat and Thermoregulation - response to heat and cold stresses

For a complete list of videos, visit our video library