Answer:
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Answer:
The frogs come from two sources, a mother and a father. The mother and the father have different genes so therefore, they are not going to look identical to one another.
Explanation:
Physical properties can be observed and describe matter such as the 5 senses: taste, touch, sight, smell, and sound.
The correct answer to your question is asthma attack:
- The asthma attack is triggered by respiratory tract infections like flu or pneumonia.
- The asthma attack is also triggered by cold due to the decrease in the diameter of bronchi.
- Emotional stress is well known to cause an asthma attack.
Pneumonia is triggered by cold and respiratory tract infections but the emotional stress factor is not being proved yet.
