Question 4 of 25 A model a rocket is used to test materials that will be used to build the body
of the actual rocket. What is a limitation of this model?
O A. It can be used to predict how the materials might be affected by a
rocket launch.
B. It is smaller than the actual rocket.
C. It uses the materials that will be used on the actual rocket.
D. It is less expensive than the actual rocket.

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.