The fern is a popular seedless vascular plant.
Edward Jenner first "discovered" a vaccine for cowpox, which provided immunity for smallpox.
Bias is having emotional input or a preconceived notion of something.
example: you are judging a contest and your best friend is in that contest. you would want your friend to win, therefore you have bias
The natural selection process applies majorly inside back species wether than between species.
Answer:
threaten the food webs of their invaded habitat and effect the ecosystem.
