The nucleus contains the <u>DNA</u> (Deoxyribosenucleic Acid). It codes for all the hereditary characteristics an organism has and it is packaged into chromosomes within the nucleus.
Answer:
It Is A Relationship A is mutualism and Relationship B is predation. Hope this help!
Explanation:
A Triassic extinction is a boundary between the Triassic<span> and Jurassic periods, 201.3 million years ago, and is one of the major </span>extinction<span>events of the Phanerozoic eon, profoundly affecting life on land and in the oceans.</span>
The nervous system contains specialized, communicating nerve cells called _neurons_, and supporting cells called _glial cells_.