Which of the following is a source of water pollution?
A. sewage
B. oil spills
C. fertilizers
D. all of the above

How can you tell the difference between rough er from smooth er?

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million