× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
o
5
4
m
4
b
4
x
4
a
4
l
4
t
4
S
4
m
3
s
3
New Topic  
vietquocnguyen vietquocnguyen
wrote...
Posts: 498
Rep: 0 0
5 years ago
Wavelike movements that propel food through the digestive system are called:
 
  a. peristalsis
  b. contractions
  c. muscle propulsion
  d. cilia beating
  e. microvilli and villi motion

Question 2

The vertebrate jaw first appeared in which organism?
 
  a. fishes
  b. amphibians
  c. reptiles
  d. birds
  e. mammals
Read 64 times
1 Reply

Related Topics

Replies
wrote...
5 years ago
Answer to q. 1

a

Answer to q. 2

a
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1008 People Browsing
Related Images
  
 2458
  
 145
  
 414
Your Opinion
Which country would you like to visit for its food?
Votes: 204