Explain how contamination of one animal in a food web can affect other animals

Food contamination can be microbial or environmental, with the formerbeing more common. Environmental contaminants that can enter the food supply chain include pesticides, heavy metals, and other chemical agents.Many opportunities exist for food to become contaminated as it is produced and distributed. Toi start with, bacteria are present in the animals raised for food. Meat and poultry can become contaminated during slaughter through cross-contamination from intestinal fecal matter. Similarly, fresh fruits and vegetables can be contaminated if they are washed using water contaminated with animal manure or human sewage. During food processing, contamination is also possible from infected food handlers. Lastly, poor hygiene in the home is also a factor.

Should we be able to choose the traits of our babies?

In the movie Gattaca the parents are able to choose there traits of there babies. I think that parents shouldn't choose there kids traits. One reason is because kids wouldnt be kids they would be different cause of the traits the parents pick for them. If parents never picked traits for there kids they would come out normal and unique. So I think we shouldn't  be able to pick traits for our babies.