Which word describes the difference between the highest and lowest points in an area?

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

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

In which horizon of soil profile is prevent material usually found