Which substances form a homogeneous mixture when mixed with water?
salt
vinegar
mud
milk
iron filings
cement

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

Physical characteristics of down syndrome

Blank is a rock with a find dark texture that makes up the oceanic crust