Which of the following is NOT a physical change

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.

What effect might melting sea ice have for people who live in coastal areas?

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?