Parasitism is a relationship between two organisms in which one organism benefits at another organism's expense. Which of the following relationships reflects this principle?
A.
termite-fallen log
B.
tapeworm-human
C.
ladybug-aphid
D.
caterpillar-cocoon

tapeworm-human

Explanation:

Tapeworm, also known as Taenia solium is a parasitic nematode that gets into the human intestine, depriving humans of food nutrients. Its effects include diarrhoea, abdominal pains and general weakness of the human body.

Thus, the relationship of tapeworm and humans is parasitic because the tapeworm benefits at the human expense.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.