Gradual thinning and graying of the hair occurs naturally with age. Thinning is caused by , whereas graying is caused by
a. destruction of the germ centers that produce hair follicles; cessation of pigment production
b. cessation of pigment production; destruction of the germ centers that produce hair follicles
c. decrease in epidermal cells; changes in collagen content
d. changes in collagen content; decrease in epidermal cells
ANSWER: a
You might also like to view...
The lower-middle-class members shape the economic and political climate by holding top political positions in the federal government, underwriting thousands of think tanks and research institutes that formulate national policies, and shaping public opinion through the mass media.
Answer the following statement true (T) or false (F)
Impact program evaluation’s intent is to answer the question: Does the program actually have an impact and does it achieve positive outcomes (results) for _____________.
Fill in the blank(s) with the appropriate word(s).
The disciplines of sociology and ______ are both interested in how people and events throughout years past are important to current society.
Fill in the blank(s) with the appropriate word(s)
The American Sociological Association's Code of Ethics for conducting research includes which of the following?
A. Researchers must keep participants enrolled in a project for the full duration of the project. B. Researchers must use their best judgment with regard to confidentiality. C. Researchers must attempt to maintain objectivity at all times D. Research projects can never place subjects at harm.