Short Answer
In order to survive, multicellular animals such as earthworms had to evolve methods ensuring that internal cells not in contact with the external environment were in contact with _______.
Correct Answer:

Verified
Correct Answer:
Verified
Q219: Refer to the figure showing the results
Q220: Refer to the figure. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5650/.jpg" alt="Refer
Q221: How does seasonal acclimatization affect an animal's
Q222: The strength of the connections between bones
Q223: Refer to the graph. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5650/.jpg" alt="Refer
Q225: Your body is 60 percent water, two-thirds
Q226: You feel cooler when standing directly in
Q227: Heat is transferred from an animal's core
Q228: Which statement is true?<br>A) At low temperatures
Q229: You are a graduate student on an