Answer:
3
Explanation:
I think it is 3 because all other ones don't effect all types of species while three makes the most sense
<span>Cancerous tumors are divided into broad groups on the basis of the particular type of tissue from which the tumor cells arise. this is called histogenesis.
</span><span>Tumors are of different types, some are cancerous and some are benign (non-cancerous). In a disease of cancer, there is an abnormal cell growth. It is characterized as out of control cell growth.</span>
Answer:its " with monitoring, the concentration of every pollutant has decreased."
Explanation: just took it on Ap3x
Continental drift is destroying the Earth's crust. Because the continents are slowly moving the earth's crust is stating to crack or create volcano's.
