Classification of forces?

and apple feeling down from a tree

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 requires the use of energy and the of transport proteins to move a molecule across a cell membrane?

What are positive impacts of algae? how is it used?