Answer:
A. definite volume and definite shape
Mark me as brainliest
Answer: dust, gas, dark matter,round
A
it's the most grammatically correct and understandable
The digestive system uses mechanical and chemical methods to break food down into nutrient molecules that can be absorbed into the blood. ... Some animals ues intracellular digestion, where food is taken into cells by phagocytosis with digestive enzymes being secreted into the phagocytic vesicles.