Celery stalks that are immersed in fresh water for several hours become stiff and hard. Similar stalks left in a 0. 15 m salt solution become limp and soft. From this we can deduce that the cells of the celery stalks are.

not b. i am not sure what it is but not b

with such great emphasis put on the act and sat exams—the studying, the review sessions, taking the test, retaking the test, scholarships dependent on scores, etc.—many think the scores are the be all end all of college applications. if you have a high score, you can get into any college you want. if you have a low score, you’re doomed.