本题中涉及的逻辑是Public health experts have known for many years thatthere is a connection between child health and ......................... 

本题中涉及的逻辑是 Some food plants, including ....... .. ..... ... are already grown indoors.

本题中涉及的逻辑是They are also examining______ and other objects, so as to find out about links between inhabitants of different partsof the region and whether these changed over time. 

本题可以利用的解题方法是The public should be prepared to fund good environmental practices.