Plz . which of the following are structures of the central nervous system cheak all that apply a. nerve cells outside the brain and spinal cord b. brain c. spinal cord

Will mark you as ! keiko’s teacher was discussing the theory of endosymbiosis. she asked keiko to mark the organelles in the diagram that most closely resembled prokaryotes. which organelles should keiko mark? * the first image is the question and the second image is some information to you answer the !

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

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