× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
New Topic  
Jayfan25 Jayfan25
wrote...
Go to Answer
Posts: 453
Rep: 0 0
6 years ago
Paleontologists estimate that ________.
 
  A) extinction is tied exclusively to human activities
  B) more than 99 of all species alive today have been discovered and described
  C) 99 of all species that have ever existed are now extinct
  D) biodiversity is evenly spread over the earth's biomes
Read 83 times
1 Reply
Replies
Answer verified by a subject expert
heyouheyou
wrote...
#1
Posts: 376
Rep: 6 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

Jayfan25 Author
wrote...

6 years ago
This calls for a celebration Person Raising Both Hands in Celebration
sakoon
wrote...

Yesterday
Brilliant ツ
TAT1238
wrote...

2 hours ago
Smart ... Thanks!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1275 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 472
  
 363
  
 409
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 741
Previous poll results: What's your favorite coffee beverage?