What was charles darwin's major accomplishment?
a. he devised the theory of evolution.
b. he devised the theory of relativity.
c. he invented communism.
d. he invented the steam engine

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

Explain how organisms could be harmed by high levels of salt from roadways?

Which of these is a provisioning service people get from the ocean