Which of the following is an example of convection?
a a hot object transferring heat to a cooler one
b the rays of the sun warming the earth
c a hot oven warming the air around it
d hot air rising and cooler air falling

Macy always thought there were only a few hair colors blonde brown and black however when she actually began looking around she saw varying shades of these hair color what is a possible reason for so many different hair colors