Anyone wanna talk i can talk on here or remind

En el ecuador existieron comunidades prehispanicas que practicaban algun tipo de ritual de enterramiento como el que se describe en el articulo la solidaridad comenzo en las cabernas

Which of these pieces of safety equipment should be worn when operating a chainsaw

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.