Collaborative Learning has a common goal, which has to be build together with all learners. In Cooperative Learning the learners were divided. Each has his own part of the problem. The interaction consists of supporting mutualy.
Hope this helps
Answer 3 would probably be right
This should be the O-zone layer.
There are instances
that when we are exposed to virus or bacteria, the antigen A in our body try to
fight but still we get sick, take some medication and we are then healed. Then,
another exposure to a new virus or bacteria, the antigen B reacts weakly for
our immune system do not recognized the foreign pathogen that invade the body
resulting to slight sore throat after visiting your sister at school.
I would say smoking is one. Drugs is another.
