<span>D. All electors voted for both Thomas Jefferson and Aaron Burr.</span>
B.) <span>A species that influences the survival of many other species in an ecosystem is called a "Keystone Species" example. "Jaguar"
Hope this helps!</span>
Points 3, 11, 13, 2, 12. It's so important because countries trade with each other over seas and countries depend on free trade.
