Why are chemicals grouped into families? 1. They are grouped ...

[karateprodigy]

Why are chemicals grouped into families?
 
  1. They are grouped according to their route of entry into the body.
  2. It is possible to understand the actions and risks associated with each group.
  3. They are grouped according to the effects they have on the body.
  4. They are grouped according to their toxicity.

Question 2

Public health surveillance has many features. One of these is:
 
  1. The sharing of the results with others
  2. Defining pubic health policy
  3. Evaluating interventions
  4. Planning national programs

[vickyvicksss]

Answer to Question 1

2
Chemicals are grouped to understand the actions and risks associated with the group.

Answer to Question 2

1
The other three answers are the purposes of surveillance, not features.

[karateprodigy]

Thanks for the timely response, appreciate it

[Liamb2179]

TYSM