Yes, slaves wanted to return to Africa because Africa didn't have slavery.
Extrusive volcanic rocks are formed on the surface of the earth and cool relatively quickly from lava erupted from a volcano. The rapid cooling of lava on the surface does not allow for visible crystals to form. The crystals are minute and most can only be seen under a microscope. Basalt is an example of an extrusive igneous rock.
Intrusive igneous rocks are formed when magma cools within the crust. This magma cools slowly and so crystals develop in these rocks. Granite is an intrusive igneous rock.
The moon's gravity is 1/6th of the Earths, so a man should be able to lift 6 times the mass.
60 kg x 6 = 360 kg on the moon.
By using the one child policy to keep the population under control.
Wegener came to consider the existence of a single supercontinent from about 350 million to 245 million years ago, during the late Paleozoic Era and early Mesozoic Era, and named it Pangea, meaning “all lands.”
