What is the universe made up of? astronomers face and embarrassing conundrum :they don t know 95 % of the universe is made up of.​

Gemstones are commonly found in pegmatites, which are igneous rocks that are a. exceptionally mafic b. exceptionally coarse grained c. exceptionally fine grained d. extrusive, forming from lava

When you imagine how you'll get from your house to the store, you are a. mental projection b. mental map c. piagetian projection d. cognitive load

Hurricanes a. usually form over land b. usually intensify over land c. gain strength from ocean heat d. usually form over the poles