× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
n
6
t
5
k
4
j
4
d
4
d
4
t
4
a
4
d
4
m
4
d
4
p
4
Home Q & A Board Biology-Related Homework Help General Biology
New Topic  
rolab97 rolab97
wrote...
Go to Answer
Posts: 498
Rep: 0 0
6 years ago
What are considered to be the two most important factors that have been involved in past mass extinctions?
  a. disease and parasites
  b. fire and weather events
  c. glaciers and earthquakes
  d. environmental and biological factors
  e. plate tectonics and climatic factors

Question 2

Which term describes new ecological opportunities that were not exploited by an ancestral organism?
  a. hybrid zones
  b. fusion zones
  c. stability zones
  d. adaptive zones
  e. reinforcement zones
Read 56 times
2 Replies
Replies
Answer verified by a subject expert
leah.kahler3leah.kahler3
wrote...
#1
Posts: 316
Rep: 3 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

rolab97 Author
wrote...
#2
6 years ago
Thank you for helping me with this assignment of mine
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1479 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 568
  
 459
  
 179