× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
o
5
4
m
4
b
4
x
4
a
4
l
4
t
4
S
4
m
3
s
3
New Topic  
starseed53 starseed53
wrote...
Posts: 754
Rep: 0 0
6 years ago
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
Read 88 times
1 Reply
Replies
Answer verified by a subject expert
gracieelaine12gracieelaine12
wrote...
Top Poster
Posts: 917
Rep: 1 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

starseed53 Author
wrote...

6 years ago
Good timing, thanks!
wrote...

Yesterday
this is exactly what I needed
wrote...

2 hours ago
Thanks
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1009 People Browsing
Related Images
  
 239
  
 115
  
 205
Your Opinion
Who's your favorite biologist?
Votes: 585

Previous poll results: What's your favorite coffee beverage?