<u>Answer:</u>
Receptors
<u>Explanation: </u>
Receptors are specific for the particular parameter . They work to detect change and convert the change into signals that serves as a afferent input to the control center.
Negative feedback requires a receptors,control center, and a afferent. Generally a receptor monitors internal conditions. Receptors sense changes in function and initiate the body's homeostatic response.
B. the inner core has a higher temp than the outer core and the pressure is greater for the inner core witch makes it a solid. I'm not the smartest bean out there but I hoped this helped
D. all of the above hope it helos
It turns out that many materials can be solid at a higher temperature if the pressure is also higher. so even though it is hotter in the inner core the pressure in the core is also higher and you can have a solid iron nickel instead of liquid
The root word of Unicellular already tells you the answer. Uni means only one cell. So the answer is one cell.