"How do scientists investigate and evidence about the human body?"

If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3

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

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus