Cancer is a common disease characterized by uncontrolled a) mitosis b) meiosis

Mitosis is closely controlled by the genes inside every cell. Sometimes this control can go wrong.

If that happens in just a single cell, it can replicate itself to make new cells that are also out of control. These are cancer cells.

They continue to replicate rapidly without the control systems that normal cells have.

Cancer cells will form lumps, or tumours, that damage the surrounding tissues. Sometimes, cancer cells break off from the original tumour and spread in the blood to other parts of the body.

When a tumour spreads to another part of the body it is said to have metastasised.

They continue to replicate and make more tumours. These are called secondary tumours.

So the answer should be A.) mitosis

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.