Answer:
B. Nonnative species that are superior competitors.
Explanation:
As you might have learned, an invasive specie is not native to a certain location but might show troublesome to an ecossystem and it may also damage the environment.
dont tell me why but, what does diatoms have to see with petroleum? well, i think is "e" cause it has almost no relationship according to my thoughts
For science
1 cells
2 tissue
3 organs
B)the gene pool of the population will remain relatively constant