True or false. in frogs, blood flows through the pulmocutaneous circuit between the heart and the lungs and skin and through the systemic circuit between the heart and the rest of the body.

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

the form of energy changes and the total energy increases0l