parallel structures

the earth is the only planet known to have abundant liquid water and ....

.... or imbalances in a particular diet can have a negative impact on one's health

choosing a diet low in fat and cholesterol is necessary to maintain health and .... the risk of heart disease

the nile was very important for stimulating both religion and .... in ancient egypt

the upper layers of venus' clouds are full of sulfuric acid, but the ... layers are full of phosporic acid solution

all cultures have developed their own myths, consisting of narratives of their history, their ...., and their heroes

the ... and manipulating of muscles are the mainstream manual healing methods which make up chiropractic

in the past 40 years, acupuncture has become a ... and widely available treatment in both developed and developing countries

demography covers the study of the size, ...., and distribution of populations

the heliopause is a dynamic region that ... and contracts due to the constantly changing speed and press of the solar wind