The main one is actin. Actin in a protein that forms its molecules to form twisting chains into a helix formation. These proteins support the contraction of muscles.
C. keeping all matches, cigarette lighters, and flames out of children's reach
Answer:
Internal pressures are:
1. Addictive tendencies
2. The need to feel pleasure
3. Genetic factors.
External Pressures:
1. Celebrity role models
2. Perception of drug use as a norm
Explanation:
The tendency for one to exhibit or imbibe certain attitude or behaviours could be caused by two major factors, namely:
A. Internal pressure: these include factors that is emanates from within the individual. The tendencies are from within and internal. Examples of internal pressures are:
1. Addictive tendencies
2. The need to feel pleasure
3. Genetic factors.
All these could act as internal pressure that might have an impact in an individual engaging or imbibing a particular behaviour.
B. External pressures: these come from the external environment of the individual, which influences the behavior of an individual. These include factors such as:
1. Celebrity role models
2. Perception of drug use as a norm
You can't see them without a microscope, nor can you smell or taste them individually.
It demonstrates that they’re stressed about something they can’t exactly control yet.