The tapeworm is a parasite, and the dog is a host.
Answer:
Gas exchange during respiration occurs primarily through diffusion. Gas molecules move from a region of high concentration to a region of low concentration. Blood that is low in oxygen concentration and high in carbon dioxide concentration undergoes gas exchange with air in the lungs.
Explanation:
<span>Leather shoes are made from natural polymers; raincoats are made from synthetic polymers. </span>
Answer:In 2019, the United States consumed about 31.01 trillion cubic feet (Tcf) of natural gas.
Explanation: