1. tough, fibrous protein produced by skin cells 2. lower layer of the skin, located directly beneath the epidermis
3. structure where hair originates
4. protective, waterproof layer of skin
5. brownish pigment that gives skin much of its color
6. condition in which red bumps called pimples form on the skin
7. outer layer of skin, consisting of epithelial cells
8. produces the salty fluid called sweat
9. produces an oily substance called sebum
10. a fiber that is found only in mammals
11. includes the skin, nails and hair
12. disease in which skin cells grow out of control
Terms
a. acne
b. dermis
c. epidermis
d. hair
e. hair follicle
f. integumentary system
g. keratin
h. melanin
i. sebaceous gland
j. skin cancer
k. stratum corneum
l. sweat gland

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Match with o for organic and i for inorganic for each compound

The term equestrian relates to which animal? bulls cows horses pigs