« previous next »

Author Question: Why is the amniotic egg considered an important evolutionary breakthrough? A) It (Read 689 times)

federox

  • Sr. Member
  • ****
  • Posts: 308
on: Aug 8, 2013
Why is the amniotic egg considered an important evolutionary breakthrough?
A) It has a shell that increases gas exchange.
B) It allows deposition of eggs in a terrestrial environment.
C) It prolongs embryonic development.
D) It provides insulation to conserve heat.
E) It permits internal fertilization to be replaced by external fertilization.


theo

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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

It is important to ask patients what other health care providers they are seeing, such as the dentis It is important to ask patients what other health care providers they are seeing, such as the dentis
The Trundholm Sun chariot pulled by a horse is a sculpture believed to be illustrating an important The Trundholm Sun chariot pulled by a horse is a sculpture believed to be illustrating an important
Evolutionary ecologists live and do research in contemporary cultures that maintain all or some aspe Evolutionary ecologists live and do research in contemporary cultures that maintain all or some aspe
It is important to act concerned when a patient is upset. It is important to act concerned when a patient is upset.
The MyPlate icon reinforces important concepts of meal planning The MyPlate icon reinforces important concepts of meal planning
Evolutionary Relationships Among Honeycreepers Evolutionary Relationships Among Honeycreepers
Video: Resting membrane potential - electrical polarity and maintenance requirements

For a complete list of videos, visit our video library