× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
New Topic  
fundai! fundai!
wrote...
Posts: 814
Rep: 0 0
6 years ago
A sample of fish is taken from a lake to measure the effect of pollution from a nearby factory on the fish.
 
  A) Observational B) Experimental
Read 41 times
1 Reply
Replies
Answer verified by a subject expert
eehughesseehughess
wrote...
Top Poster
Posts: 1161
Rep: 5 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

fundai! Author
wrote...

6 years ago
this is exactly what I needed
wrote...

Yesterday
Thank you, thank you, thank you!
wrote...

2 hours ago
You make an excellent tutor!
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1269 People Browsing
Related Images
  
 285
  
 260
  
 72
Your Opinion
Who will win the 2024 president election?
Votes: 3
Closes: November 4

Previous poll results: Where do you get your textbooks?