Which of the following environmental risks is most likely to lead to digestive health issues?
a. meat contamination
b. air pollution
c. fertilizer use
d. none of the above

Meat contamination can lead to digestive issues, pollution mostly leads to issues with breathing.

Answer;

A. meat contamination

Explanation;Meat contamination is most likely to lead to digestive health issues. Meat and poultry may become contaminated during slaughter by small amounts of intestinal contents. They may also be contaminated during storage.Eating meat contaminated with bacteria may cause food poisoning, coupled with symptoms such as stomach cramps and diarrhea, organ failure or even death.

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic