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.
Answer:
countries that were in alliances with other countries were obligated to support their alliance when war was declare
Answer:
France bitterly resented its loss in the Seven Years' War and sought revenge. It also wanted to strategically weaken Britain.
