Put the steps of binary fission in order from first (1) to last (4).

dna molecules attach to the cell membrane.
two new, identical cells are produced.
dna is copied.
the membrane elongates and pinches off.

D-no effect on the rate

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.