Where does wind come from and how come clouds can float if there's gravity and they don't just steam into the air

In the developed world, women are increasingly more likely to delay childbirth until their mid- to late- twenties or long because

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4

Rescooperate ice cream shop recently analyzed their books. they found that in the past year, they made 100000 selling ice cream and spent 75000 on supplies and factory space. the remaining 25000 represents