C.The unique role the species plays in an ecosystem .
..............4 is D and 6 is A
This is an example le of commensalism.The burdock seeds benefit and the cow is unharmed.
Answer:
D. student 4
Explanation:
I personally find this question slightly bewildering. It does definitely make you think. I decided your best answer choice would be D, because a dog wouldn't always be there, or the weeds.
