Rocks are classified by *
A) how they are formed
O B) when they were formed
OC) where they were formed
O D) their color when formed

What is the name of this hydrocarbon?

What element breaks down into yttrium-90?

How does blood clotting prevent the entry of pathogens through cuts and wounds? answer asap,, this is due tomorrow. will mark as brainliest or whatever you call it : )