On average, the total brain weight of people in their 80s is about less than that of middle-aged people. however, for those with dementia, it is about percent.

The author uses dialogue in this excerpt mainly

The dictionary definiton of a word reflects the of that word?

As with any small island country, cuba has fewer natural resources than countries such as brazil. this affects their economy in that cuba a) exports only manufactured products. b) exports more products than it imports.. c) must import more products than it exports. d) has imposed trade barriers against the united states.