In the following equation, complete, balance, and classify the type of chemical reaction(synthesis, decomposition, single replacement, etc.) MnSO4 + 6H2O = ?

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.

The answer for #3 is c but i don't know why

Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick