Answer:
A student is investigating the affect of different salts on melting points. Four patches of ice of equal size are roped off and a different type of salt is poured on each, one receives table salt (NaCl), one receives Calcium Chloride (CaCl2), one receives Potassium Carbonate (KCO3) and the fourth receives inert sand instead. Each patch receives an equal amount of salt or sand. The student measures the volume of ice remaining and subtracts it from the original volume of ice to see how much melted away. What is a control variable in this experiment?
The process in which organ systems work to maintain a stable internal environment is called homeostasis. ... Here are just three of the many ways that human organ systems help the body maintain homeostasis: Respiratory system: A high concentration of carbon dioxide in the blood triggers faster breathing
B an obligate intracellular parasite
It consists of two main parts. The peripheral and central. The central nervous system consists of the brain and spinal cord, while the peripheral has mainly nerves. The PNS has enclosed bundles of axons that connect to the brain as well as the rest of the body. Sorry, I'm a science nerd.but hope this helps buddy.
