Compared to benign tumors, malignant tumors are different because the cells in malignant tumors are cancerous.
Answer:
B
Explanation:
They altered rocks into soil that was able to support simple plants such as grasses. This is an example of altering the environment around them to make it more habitable for other species.
Answer:
The answer is Physical. Physical immunity occurs when a person immune system responds to antigen.
Explanation: