How are atoms in the same period similar and how are they different?

Adepositional also feature that forms where a stream enters a lake or an ocean is a

Which of the following best describes technology a. something created for only scientists to use b.the method of thinking that scientists use. c.the application of engineering to create useful products. c. a scientific idea

What are fossils of organisms that existed over a wide area but only for a limited time period called?