Can someone please help

Jewelweed, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. these structures are favorable because they a. can cause genetic changes to occur. b. prevent germination within the seed pod. c. aid in the dispersal of the species. d. attract insects that aid in pollination.

Which other elements contain the same number of outer electrons as sodium

What is the independent variable in this investigation? mass volume sample number substance density