Which statement describes the independent variable?
It is measured and recorded as data.
It is unchanged in the experiment.
It is also called the responding variable.
It is also called the manipulated variable.
O

I believe that the answer to this question is B: It is unchanged in the experiment.  

Explanation:

d the manipulated variable the independent variable is the variable that is being changed or manipulated.

Explanation:

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

thermophiles, notice the prefix thermo.