Answer:
i think its Social modeling and Physiological factors
Explanation:
I would say the last option students who bring weapons to school are acting on the rage they feel as victims of harassment.
It's trachea, not tranchea xD
If your cilia which is located in your trachea got damaged, you will get sick easily. The reason is that the cilia helps protects you from bacteriam by keeping bacteria from getting down into your throat.
The cilia getting damaged is most common in smokers due to cigarette smoking, btw.
Depend on what you mean by what kind of competition, if you talk about competition for food, some bird population may be getting smaller and have a hard time to reproduce because they can't get enough food for themselves.
Answer:
While many STDs can be cured or treated with medication, the consequences of untreated STDs can include: infertility, pregnancy complications, cervical cancer, pelvic inflammatory disease, birth defects and a 3- to 5-fold increased risk of HIV transmission.
