Ulcers. These are sores that develop in the stomach or duodenal lining.
Answer:
Positive: Communication. The parents can easily talk to their children wherever they are, make sure they are safe.
Negative: Addiction to social media can cause time away from family, leading the family to be more absorbed in the perception of their family to their followers, rather than their <em>actual</em> realtionship.
Explanation:
It takes about 90 days so that the antibodies can get in action. This process is known as seroconversion and antibodies are not produced right after the person has been infected.
Answer:

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They have to take course.