During the period of the zygote, the __________ becomes the new organism, and the __________ becomes the structures that provide protective covering and nourishment

In terms of sexting, it is estimated that ____ of adolescents under the age of 17 have admitted to receiving revealing photos of other adolescents

a. 10% b. 15% c. 20% d. 25%

Murray is a child with allergies who has respiratory attacks that make breathing very difficult. These attacks often occur at night and when his parents have had a fight. Murray is probably suffering from ____

a. angina pectoris c. essential hypertension b. asthma d. posttraumatic stress disorder