Biology
Medium
Question
The higher animals have special organs for exchange of gases as their skin is ___________ ?
A
Thin
B
Thick
✓ Official correct answer
C
Soft
D
Hard
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
Thin
No member explanations yet for this option.
B
Thick
No member explanations yet for this option.
C
Soft
No member explanations yet for this option.
D
Hard
No member explanations yet for this option.