× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
L
3
d
3
y
3
a
3
n
3
d
3
e
3
d
3
c
3
p
3
M
3
a
3
Home Q & A Board Science-Related Homework Help Psychology
New Topic  
mcranfield mcranfield
wrote...
Go to Answer
Posts: 571
Rep: 0 0
6 years ago
The main function of the immune system is to
 
  A) manufacture white blood cells.
  B) manufacture red blood cells.
  C) protect internal organs.
  D) defend against foreign invaders.
Read 84 times
1 Reply
Replies
Answer verified by a subject expert
tdclarktdclark
wrote...
#1
Top Poster
Posts: 762
Rep: 1 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

mcranfield Author
wrote...

6 years ago
This site is awesome
amandamraz
wrote...

Yesterday
Smart ... Thanks!
Brownr40
wrote...

2 hours ago
Just got PERFECT on my quiz
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1038 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 246
  
 8284
  
 472
Your Opinion
Who will win the 2024 president election?
Votes: 19
Closes: November 4
Previous poll results: How often do you eat-out per week?