Answer:
Explanation:
When the body senses foreign substances (called antigens), the immune system works to recognize the antigens and get rid of them. B lymphocytes are triggered to make antibodies (also called immunoglobulins). These proteins lock onto specific antigens.
220-your age= predicted maximum heartbeat
True false question if so it is False.
A is the answer because the community wants ALL of its citizens to become more physically active and by purchasing a bicycle for each household it can work so everyone in that household will get a chance to ride the bicycle.
