B. Soil Contamination
All the other answers are talking about clean and pure things while this answer is the only negative one. So B is your answer.
Would not be to distinguish between labeled DNA and amino acids.
D. an arctic fox is brown in summer and white in winter
Answer:
Option E, C tactile (CT) afferent
Explanation:
Whenever a slow moving gentle touch experienced, the response is due to the nerve fibers called C-Tactile afferents (CTs).
C-Tactile afferents (CTs) are unmyelinated mechanoreceptors of low threshold and low conduction velocities.
In humans, CT neurons are found in hairy skin.
The pleasant feeling observed during a slow gentle touch is due to the interaction of
CT neurons project to the insular cortex in the brain
Hence, option E is correct
They are made of some of the same matter
