Answer: Anything can effect you in some way doesn't matter what it is. A substance that wouldn't be considered poisinous is milk maybe. i really dont know
Explanation:
Answer:
d) introducing a competing species.
Explanation:
Competition refers to a dynamic partnership in which various species or populations in the environment concurrently seek to utilize the same available resources. Organisms in an ecosystem compete for the same limited nutrients and in the process, one ultimately got an edge over the other. because resources are limited in nature, the population of one species decreases at the expense of the survival of the other.
