Which statement is true? select one: a. the racial origin of hair can always be identified b. hair can be individualized through its trace elemental composition c. two hairs from the same head may not have the same morphological characteristics. d. through a microscopic examination a single hair can be individualized to one person. e. hair is routinely examined to determine sex.

c. Two hairs from the same head may not have the same morphological characteristics.  

Explanation:

As hair grows in humans, it contains three internal parts:

1. the cuticle,

2. the cortex,

3. the medulla.

Cuticle :  The cuticle is the outermost part and is made of scales.

Cortex :   The cortex is in the middle and made of protein.

Medulla : In the very middle is the medulla. It supports the hair's structure.

Hair is made of a protein called keratin.

Melanin gives hair its color.

The longest hair in the human body is the head hair. No two head hair may have the same morphological characteristics.

Thus the answer is

c. Two hairs from the same head may not have the same morphological characteristics.  

according to hess's theory, when the magma cooled, it would expand and push the tectonic plates apart. it would push the north and south america plates to the west and eurasia and africa ones to the east. the atlantic ocean would get wider but the coastlines of the masses would stay the same.

harry hammond hess was a geologist and a united states navy officer in the second world war. he is considered to be one of the founding fathers of the theory of plate tectonics. he is known for his theories on sea floor spreading, stating that the movement of the continents was the result of see floor spreading. the continents are attached to the plates and do not move separately. the plates themselves shift and change shape, carrying the continents along.

its b i googled it wish u luck