Pls give meh a good explanation what is the major difference between primary and secondary succession

What causes the phospholipids to organize themselves the way they do

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

Which of the following is not associated with invasive species?