I believe the answer to your question is external stimuli
They have different body parts
Answer:
The statement Parasites can be protozoa, fungi, or multicellular organisms, is "true"
Explanation:
The statement parasites can be protozoa, fungi or multicellular organisms is true because we know that malaria happens which is an infectious disease is caused by the plasmodium parasite. Parasite are the any organisms which often causes the infection to human beings. It may be protozoa, worms, fungi or any multicellular organism. The human parasite are further classified into two types like endoparasite (here the infection takes place inside the body) and ectoparasite( infection occurs within the skin surface).
