Which part of the atom is directly invovled in chemical changes ?

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis

What was the impact of the concordat of worms?

Some substances but not other can cross the (blank) membrane of a cell