Final answer:
Metastasis is the process of developing secondary tumors due to migration. It occurs when tumor cells shed and enter the bloodstream, allowing them to travel to other parts of the body and form new tumor formations.
Step-by-step explanation:
Metastasis is the process of developing secondary tumors due to migration. It occurs when tumor cells shed and enter the bloodstream, allowing them to travel to other parts of the body and form new tumor formations. This phenomenon is one of the key characteristics of malignant tumors, which are cancerous and can grow beyond the boundaries of the original tumor. Cancer cells undergo somatic mutations that facilitate metastasis and allow for uncontrolled cell growth in different locations in the body.