The first line of defense of the immune system includes mechanical barriers that prevent organisms from the body. The second line of defense includes processes that help remove or neutralize organisms that have penetrated mechanical barriers. The third line of defense is a complex defense that recognizes and reacts to specific organisms.
Answer:
the main idea is that bikes have a lot to do with society the problem is that most people don't think of the bicycles so they don't make the lanes for them and the solution is make more bike lanes because they are a main source of transportation
When I searched it on Google there were like five returns. so I think is false .
I hope it helps
I think it's because the person hasn't been getting sleep and doesn't know how to stay asleep and just wide wake and stays up. So their health isn't going to get better because of their sleeping problem.
