Answer:
true, the alternative would be postzygotic barriers.
Explanation:
The primary cause of foodborne illness in north america is due to ingested bacteria.
The major pathogenic bacterial species are: Salmonella, E.coli, Campylobacter, and Staphylococci
Long
ago, the microscope is not yet invented so people did not know about cells,
bacteria and other minute organism. With this, we can conclude that many
questions go unanswered and unasked because of the lack of technology. Moreover,
valuable invention has opened the mind of the people to become curious on what
is around and how life works in this world.