Amoeba sisters: nature of science

The scientific mrthod is a process used by scientists to find answers to a question or to solve a problem. No there isn't just one because there are several versions of the scientific method. Some versions have more steps, while others may have only a few. Scientists can add steps, take out steps, revise, or make models.

Parasitism is a non mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of other , the host. So the best answer among the choices is A. Tapeworms living in a mammals intestinal tract