Are all these physical changes
tear
mix
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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.

Why doesn't heat added to water make the tempature rise above 100c

What are the similarities of physical and chemical change ?