How is a 1/4 unit by a 1/4 unit Square different from a 1/4 of a unit Square

What conclusión can be drawn about the middle east

How do convection currents form underwater mountains?

Rainbow trout is non- native to the united states. however this species is breeding with the native gula yltrout acientistrecently observed that the hola trout were becoming exitinct what is the cause of their extinction