Which of the following statements is true about the structure of an atom? 1. The proton and neutron are of equal mass.
2. The electron is the most massive subatomic particle.
3. The electron cloud contains more mass than the nucleus.
4. The nucleus of an atom contains more mass than the electron cloud.
A. 1 and 4

B. 2,3, and 4

C. 1 only

D. 2 and 3

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

Which statement best describes a typical difference that could be found between the "analysis" and "conclusion" sections of a lab report? a) only the "conclusion" describes errors that occurred during the experiment, and only the "analysis" section suggests further research. b) only the "analysis" section includes specific data comparisons, and only the "conclusion" section suggests further research. c) only the "analysis" section discusses whether the original hypothesis was supported, and both sections include graphs of data. d) only the "conclusion section discusses whether the original hypothesis was supported, and both sections suggest further research.(the answer is b i just took the test)

What advantages does a pedigree have over a written passage?