Top Posters
Since Sunday
y
2
s
2
2
a
1
w
1
w
1
i
1
m
1
s
1
c
1
k
1
1
Home Q & A Board Other Fields Homework Help Family Studies
New Topic  
utrail utrail
wrote...
Go to Answer
Posts: 724
Rep: 0 0
6 years ago
Why do most people say pregnancy lasts 40 weeks when it lasts an average of 38 weeks?
A) a woman's cycle is not precise.
B) sperm can survive a number of days or weeks in the uterus.
C) due to how health professionals measure pregnancy.
D) physicians use ultrasound to figure due dates out.
Textbook 
Children: A Chronological Approach, Canadian Edition

Children: A Chronological Approach, Canadian Edition


Edition: 5th
Authors:
Read 88 times
1 Reply
Replies
Answer verified by a subject expert
fdr77fdr77
wrote...
#1
Posts: 301
Rep: 5 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

utrail Author
wrote...

6 years ago
You make an excellent tutor!
TAT1238
wrote...

Yesterday
Good timing, thanks!
nicolepope23
wrote...

2 hours ago
Thank you, thank you, thank you!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  967 People Browsing
 130 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 246
  
 421
  
 174
Your Opinion
Do you believe in global warming?
Votes: 422
Previous poll results: What's your favorite funny biology word?