It’s either a or b because c and d are done when you hurt yourself accedentally and plz mark me brainliest
An animal that relies on a digestive tract for digestion breaks down food by "b) extracellular digestion <span>only" since digestion happens at all levels of the organism. </span>
You never can know the exact value of a physical or chemical dimension because several reasons: all the instruments have a certain sensibility (sensibility is the smallest variation of the dimension that the instrument can measure) that cannot be overcame.
