Hi! i need the names of these two rocks for a science project. it’s taken me hours to try and figure out. !

Witch one is it soo it the the question b.a,b,c,d

Which factors add to the greenhouse effect and are caused by human activities?

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