Which of the following is an example of two or more body systems interacting to maintain homeostasis?

When body temperature is high, signals from the brain cause increased blood flow to the skin.
When calcium levels in the blood are low, hormones cause calcium to be released from bones.
When too much salt is consumed, it is filtered out of the blood by the kidneys and excreted.

i believe it is c.) 1575 j.

1.solid

2.carbon dioxide

3.helium

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml