× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
Home Q & A Board Biology-Related Homework Help Medicine Nursing and Clinical
New Topic  
Haleyevette Haleyevette
wrote...
Go to Answer
Posts: 722
Rep: 0 0
6 years ago
Which of the following is responsible for the dramatic increase in life expectancy during the twentieth century?
 
  a. Technology increases in the field of medical laboratory research
  b. Advances in surgical techniques and procedures
  c. Sanitation and other public health activities
  d. Use of antibiotics to fight infections
Read 41 times
1 Reply
Replies
Answer verified by a subject expert
rayohn2010rayohn2010
wrote...
#1
Top Poster
Posts: 884
Rep: 2 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

Haleyevette Author
wrote...

6 years ago
Good timing, thanks!
gma_of_7
wrote...

Yesterday
Correct Slight Smile TY
sleinhi
wrote...

2 hours ago
This helped my grade so much Perfect
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1306 People Browsing
 123 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 273
  
 33
  
 393
Your Opinion
Which of the following is the best resource to supplement your studies:
Votes: 249
Previous poll results: What percentage of nature vs. nurture dictates human intelligence?