2. which structures in the diagram above connects the umbilical vein with the vena cava and connects the pulmonary artery with the aorta?

a: a, the ductus arteriosus; d the ductus venosus
b: b, the ductus arteriosus; d the ductus venosus
c: b, the ductus venosus; d the ductus arteriosus
d: a, the ductus venosus; d the ductus arteriosus

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics