explique Porque el patrón de extremidades de un hueso dos huesos muchos huesos de dos importantes para explicar el origen de los tetrapados​

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

Since we don't see a strand; i got answers off a sheet and the correct answer is "2".