Answer:
The answer is Y
Explanation:
Trust me I've done this before
Toxicology is the study of poison on living things
excretory system: removes waste from blood.
respiratory system: obtains oxygen so the energy in the nutrients can be extracted.
circulatory system: transports nutrients from small intestine to the othet tissues.
nervous system: regulates and controls digestive functioning.
( Am not completly sure, but i think this is the answer)
<span>Pancreas. The pancreas does so by having beta cells that secrete a certain amount of insulin after consumption of food. There are then delta cells that regulate the beta cells, and then gamma cells that in turn regulate the delta cells.</span>