<span>So far, astronomers have found more than 500 solar systemsand are discovering new ones every year. Given how many they have found in our own neighborhood of the Milky Way galaxy, scientists estimate that there may be tens of billions of solar systems in our galaxy, perhaps even as many as 100 billion.</span>
Answer:
C. Do not contain enough oxygen to support plant and marine life
Pretty sure it's outer core, lower mantle because the inner core is solid iron
Answer:
its is determined by congress
By Sublimation, you can separate salt water from sand !!
and by Evaporation, salt can be separated from water !!
so all three are separated by these two process !!
