The term hierarchy refers to
a. a situation in which higher species such as men will always be in control of lower species such as animals.
b. a team in which everyone is equal and has to pull his or her own weight.
c. a condition in which the weak must die so the strong can survive.
d. a power structure in which each member knows his or her own place

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.