Benjamin franklin collected electricity from the air in a leyden jar
The cemetery has 2,345 grave-markers, but historians estimate that as many as 5,000 people are buried in it. The cemetery is adjacent to Park Street Church, behind the Boston Athenaeum and immediately across from Suffolk University Law School
The bottom of geothermal sources is abundant in black-colored ores (sulfites) of iron, copper, zinc, nickel and other metals called "black smokers". Iron ores are rocks from which metallic iron can be obtained. Metals, originally disseminated on magma-laden or rocky paths, are concentrated in fluids and can be redeposited if they encounter favorable temperatures and pressure conditions, forming mineral veins.
In a unitary system, the central government has all the power. In a federal system, some powers are given to the central government and other powers are given to the lower levels of government (provinces or states). ... In a federal system, they have a right to their powers.
The correct answer is A) Johanan Ben Zakkai. Hope this helps.
