The alerting system is part of the reticular activating system. It consists of the brain nucleus known as and its projections throughout the brain.
A. Locus coeruleus.
B. Von Economo nucleus.
C. Substantia nigra.
D. Caudate nucleus.

The answer is A.

Explanation:

The alerting system which is a part of the reticular activating system that provides the consciousness for us using the connections between the brain stem, cerebrum etc. consists of Locus Coeruleus which are nucleus located in the brain that responds to psychological stimuli such as panic, stress or discomfort. So the answer is A.

I hope this answer helps.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

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-lavira: )