What is the law conservation of mass

How can behavioral science be applied in improving public health? a.by tracking a disease to determine its sourceb.by creating promotions that improve health habitscboth by tracking a disease to determine its source and by creating promotions that improve health habitsd.neither by tracking a disease to determine its source or by creating promotions that improve health habits

"endangered dreams: the great depression in california: " which word best summarizes the author's description of the pea pickers camp?

Saved in marigolds, what do the following lines from the passage mainly reveal about lizabeth? suddenly i was ashamed, and i did not like being ashamed. the child in me sulked and said it was all in fun, but the woman in me flinched at the thought of the malicious attack that i had led.