What is the role of the receptor in a feedback system?
a. it contains the set point for the variable that is being controlled.
b. it measures changes in the variable that is being controlled.
c. it produces output that will have a direct effect on the variable that is being controlled.

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing

Which organism actively hunts other

Which of the following would involve looking at different structures of organisms and comparing how similar they are? a. vestigial structuresb. radiometric datingc. homologous structures