What is the difference in length between the longest ski trail and the shortest ski trail?

Groups of organs that work together to complete a process in the body are called: a. cells b. tissues c. nerves d. systems

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.