__________________________ is a collection of 40 databases maintained by the National Library of Medicine. Some of the databases in the collection are MEDLINE and SDILINE

Backpack-type water vacuum tanks normally have a capacity of:

A. 1 to 3 gallons (4 L to 11 L). B. 4 to 5 gallons (15 L to 20 L). C. 6 to 10 gallons (23 L to 38 L). D. 10 to 15 gallons (38 L to 57 L).

A flowing spring is classified as a __________ water source

Fill in the blank(s) with correct word