A lake is different from a sea in that a sea is made of salt water and a lake is usually fresh water.

True or false?

How many square miles is the big island of hawaii

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

Which of the following types of nonrenewable fuel sources requires the storage of radioactive waste? a. coal b. nuclear c. solar d. oil