I'm not totally sure. But in my view, <span>(4)a salt solution</span> would be used to prove that the gas produced by the yeast in the vacuum bottle could change the pH of the liquid in the flask
Ecological succession may occur for many different reasons. A lot of times though, it is because the conditions of an environment may drastically change.
<span>because they have an enhanced sight due to the amount of magnification and objective lens</span>
<h2>Stressor and Stress</h2>
Explanation:
- In this situation,approaching the attractive woman is stressor and Desmond's racing heart is the stress
- Stressor may be defined as any agent(chemical or biological),environmental stimulus,event or experience which may induce stress in an individual
- They may induce some change:physically or psychologically
- Stress is defined as a pain which gives a feeling of strain and pressure
- Stress may include any physical,mental or emotional factor
- Stress may be external or internal
- External stress may arise due to environmental,psychological or social situation whereas internal stress may arise due to illness or any medical procedure
- In case of Desmond attractive woman acted as a stimulus and approaching her was the stressor as a result his heart started racing(external stress)
Answer:
Fossilized remains of marine organisms