I'm a scrawny m f with a cool hairstyle

Which of the following is evidence to the past existence of glaciers?

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .

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