Mark "t" for true and “f” for false.
about half of slave children died by the age of 5.

i'm not sure i understand what you are trying to ask, if you give more information, that would be most .

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.