Why does the left ventricle have a thicker wall than the right ventricle? a. a more muscular wall is required to supply the pumping that powers the flow of blood into the systemic circuit b. the left ventricle is responsible for systole while the right ventricle is responsible for diastole c. the position of the heart in the chest cavity allows for the left ventricle to develop a thicker wall than the right ventricle d. a more muscular wall is required to supply the pumping that powers the flow of blood into the pulmonary circuit e. the left ventricle contains the pacemaker?

The correct answer is a. The left ventricle is responsible for securing the flow of blood into the systemic circuit, meaning around the entire body. On the other hand, the right ventricle is responsible for securing the flow of blood only through the lungs (pulmonary circuit). Therefore, the left ventricle has a more demanding task, and needs a stronger muscular system to power the pumping of the blood around the human body. That is why the left ventricle has a thicker muscle wall. 

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.