Territorial changes after world war 1 led to the creation of new countries,

Food can come from sustainable or unsustainable resources. why has the united nations suggested that bugs could be a better source of food than animals like pigs or cattle?

Why isn't the balkan region good for farming? it has dry summers. it is far from the sea. its soil is not fertile. its terrain is mountainous. its winters are mild.

The first atomic explosion was detonated in the desert north of alamogordo, new mexico, on july 16, 1945. what percentage of the strontium-90 ( yr) originally produced by that explosion still remains as of july 16, 2016?