Major natural events, such as volcanic eruptions, significantly change the environmental conditions of the areas where the events occur. what happens to local populations that are unable to adapt to the new conditions or to move to other areas?

they will be destroyed if they cant adapt

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.