The answer is B. Digestive and cardiovascular
The appropriate response is the concept of conservation. Conservation alludes to an intelligent deduction capacity which, as indicated by the clinician Jean Piaget, is absent in youngsters amid the preoperational phase of their improvement at ages 2– 7, yet creates in the solid operational stage at ages 7– 11.
They are prokaryotic cells....
"A. cutting down most of the trees in a forest to make furniture" is the correct answer because some trees play a vital role in processing the carbon in the air.