× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
e
5
e
4
4
d
4
R
4
o
3
p
3
t
3
3
m
3
p
3
m
3
Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
New Topic  
hboydston hboydston
wrote...
Go to Answer
Posts: 742
Rep: 0 0
6 years ago
What allowed scientists to confirm their theories that the Earth's interior had layers?
 A) A large earthquake that occurred in Alaska
  B) A system of 800 seismic stations placed worldwide
  C) The correlation between intensity, frequency, and characteristics of waves
  D) All of these choices
Read 35 times
1 Reply
Replies
Answer verified by a subject expert
icysparklesicysparkles
wrote...
#1
Top Poster
Posts: 647
Rep: 6 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

hboydston Author
wrote...

6 years ago
Helped a lot
smi3
wrote...

Yesterday
this is exactly what I needed
my2redeyes
wrote...

2 hours ago
This calls for a celebration Person Raising Both Hands in Celebration
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  960 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 304
  
 85
  
 581
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 378
Previous poll results: Do you trust social media networks with protecting your privacy?