<span>The scientific community ensure that all work done and shared is purely objective and based on solid facts and complete experimental procedure. Therefore, the scientific method is adopted to avoid bias in experiments. A bias would cause results to be skewed to fit the researchers' personal views, making the finding unreliable.</span>
You do know its impossible to answer the question without figure 18-6
<span>Animals must switch between ectotherm and endotherm methods. Ectotherms and edotherms are diiferent types of animals, which use different approches for maintaing body temperature. </span>
The answer is c.
Urinary, respiratory and cardiovascular.
Respirotory system gets oxygen from air to your circulatory system, and circulatory system delivers oxygen to tissues