The immune system<span> is made up of a network of cells, tissues, and organs that work together to protect the body. One of the important cells involved are white blood cells, also called leukocytes, which come in two basic types that combine to seek out and destroy disease-causing organisms or substances.</span>
The answer to this is : B, Their roots.
There are 4 stages in mitosis
Answer: Most rocks contain SiO2 (silica), which is a compound of silicon and oxygen that forms 74%
