Answer:
numbers and lines what else do u what you didn't put a picture
<span>The answer is that he didn't have better ways of storing and preserving foods. </span>
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.
