Lampreys are known to attach themselves to fish. in doing so they rasp off a section of the fish with hard keratinized structures and "feed" on the blood and fluid that oozes into their oral cavity. fish can survive with a lamprey attached, but they have to expend extra energy swimming with the lamprey attached. this association would be designated a:
a) mutualism.
b) parasitism.
c) predation.
d) commensalism.

i believe the correct answer from the choices listed above is the first option. the scientists need to look at the   validity of data, claims, hypotheses, and observations before  developing an argument. they base their arguments on facts that are present and they make sure they have proofs. 

explanation:

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

i believe your answer would be c.. : )