Body temperature control is an example of negative feedback, a process by which the body responds to a stimulus by correcting the change and bringing the body back to the original setting.
What is stimulus ?
A stimulus is a noticeable change in the internal or external environment of an organism's physical or chemical composition. Sensitivity is the capability of an organism or organ to perceive external stimuli and to respond appropriately to them.
The hypothalamus controls your body temperature in a manner similar to how a thermostat controls the temperature in your home. It does this by responding to both internal and external stimuli and making adjustments to keep your body's temperature within one or two degrees of 98.6 degrees.
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Answer:
The atmosphere is the largest reservoir of the nitrogen as it is composed of 78% of Nitrogen. Although 78%, this is not used by the organisms directly as the nitrogen molecule exists in nature in the form of divalent joined via triple bonds.
These triple bonds require a great amount of energy to be broken and used. Only a few prokaryotic organisms called nitrogen-fixing bacteria have the capability to break these triple bonds as they contain enzymes-nitrogenase complex which converts the atmospheric nitrogen to usable forms like ammonia, nitrates and nitrites. About 92% of the atmospheric nitrogen is fixed through this way rest through thunderstorms and Haber's process.
Thus, nitrogen-fixing bacteria is the answer.
B. Being Biased as scientists want concrete facts that haven't been influenced by bias or outside forces.
