The rift valleys. its the continental plates moving apart
Answer:
In Southern Europe the coastal plains and river valleys allowed farming; the steep mountains allowed people to raise sheep and goats; and the peninsulas were used for traders and seafarers.
Explanation:
Answer:
Explanation:
Amphibian's heart has 2 accessory chambers, Sinus Venosus (receiving blood) and Conus Arteriosus (sending blood out). Human heart does not have that chambers. Blood enters to the right auricle and then is pumped out by two ventricles.
