I believe it's D. A catalyst causes an increases the rate of a reaction without itself being consumed.
MgCO3 will remain undissolved and
NaNO3 will dissolve
<span>This is Pseudoscience. The scientists didn’t study their
experiment, they would have to prove their claim more than once, and they
assumed things before actually studying it. </span>
First cell theory. All living things are composed of cells.
Second cell theory. Cells are the basic unit of structure and function in living things.
Third cell theory. All cells are produced from other cells
