Answer:
an acid is a chemical substance that neutralizes alkalis dissolves some metals and turns litmus red typically a corrosive or sour-tasting liquid of this kind
Answer:
Explanation:
becase it is the way it is the why the have alot of babe when th4e sperm in a girl
This link should help you understand http://www.universetoday.com/20289/phases-of-the-moon/#
B cells make antibodies. That's just what they do.
2 is D. The flu virus constantly mutates, so a new vaccine every year is developed.
Antibodies attach to cells with the corresponding antigen. anti-anti, that's how i remember it.
You're welcome!