The field of environmental health grew out of efforts to control communicable disease.

Sanitary landfills are primarily used to dispose of 

Sanitary landfills are primarily used to dispose of

Vaccination is used for both prevention and treatment for rabies infections.

A homeschooled child recently visited an ailing great-grandparent who was complaining of a painful rash. Even though the child had had no contact with children suffering from chickenpox, the child developed chickenpox. How did the child contract the infection?

Select the digraphs from the options below. Select all the apply

Match each level of phonological awareness to the example activity provided.

An effective word chain uses words that change multiple sounds at a time.

Which function of the skeletal system requires the leg bones to be extremely strong?  

The lymphatic system plays a role in defending the body against pathogens and maintaining a state of homeostasis.