Answer:
Because it keeps track of all the elements
Answer:
D
Explanation:
Double Displacement reaction
Both sides are balanced with option D
Separa los metales de los no metales. Agregame como amiga, saludos.
Answer:
The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies. Antibodies attach to an antigen and attract cells that will engulf and destroy the pathogen. The main cells of the immune system are lymphocytes known as B cells and T cells.
