After Sarah finishes her walk, she notices that her blood is not really pumping that hard. Sarah can know that since it's a cool day, she's giving off what kind of heat compared to usual?
more less
A B
On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body.
blood flow
more
increasing
MORE
MORE
heat
is not really pumping
heat
blood
blood