Water! (abiotic)
If water runs out then everything dies! :)
Thanks for the opportunity to answer your question and I hope this help! :)
The question is incomplete and no options are available. So, the answer includes all the common statements.
Answer:
Theophylline may be defined as a drug used to treat the different respiratory diseases like asthma and COPD. The proper dosage of the drug required for the treatment.
The client is undergoing for the treatment. The serum level can be used to determine the therapeutic levels. The nurse can say that the drug is showing negative or excess effect. The drugs showing some immune reaction due to its high level.
The correct answer is HPA axis.
The Hypothalamic-Pituitary-Adrenal (HPA) axis is one of the most important neuroendocrine systems, which regulates the stress response and other functions such as the digestion, mood, emotions and the immune system.
The hypothalamus, when triggered by a possible stressor, releases two hormones; the vasopressin and the corticotropin-releasing hormone (CRH). CRH, in turn, triggers the release of the adrenocorticotropin hormone (ACTH) from the pituitary gland. As a result of the secretion of ACTH, cortisol is secreted by the adrenal cortex.
Cortisol is a steroid hormone, considered to be our body's stress hormone.