Which of the following steps can be used to identify a double replacement reaction? (5 points) O Check whether the products are salt and water.
O Check whether the reactants are an acid and a base.
O Check if the lons of two compounds exchange places.
O Check if one element replaces another element in a compound.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

the pseudoscience are like beliefs, theories, or like practices that are considered scientific