I believe you are asking about the "triangle" we were tought a simple triangle. Cells at the bottom because there are the most of them, tissues next, organ next, and organ system at the top. So I believe the answer you are looking for is Organ System.
Answer:
To keep clean water and save wild life
Explanation:
type of pollution - littering
Cuase: excess materials not being disposed correctly.
Effect: animals die the water is infect and items could damage filters-dirty water and dead animals.
Answer:
Mental Stress: Overwhelmed and/or confusion
Emotional Stress: Depression and/or Anxiety
Social Stress: Verbal aggression and/or conflicts with others
:)
Answer:
Maybe because they're not confident enough to do so.
