What is true of all modern economic systems? O They are all mixed economies.
O They are all market economies.
O They are all command economies.
O They are all traditional economies.

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error? the object is an asteroid, not a dwarf planet. the object is a moon, not a dwarf planet. the object is not a dwarf planet because it travels with other objects. the object is not a dwarf planet because it is round.