I believe the answer is C. Nucleus, Cell Wall, Cell Membrane
B <span>The </span>definition<span> of a </span>pathogenic organism<span> is an </span>organism<span> capable of causing disease in its host.</span>
The answer is food chain.
<span>The biggest difference between the elements and the compounds is that elements are substances that cannot be separated into simpler substances and more elements chemically joined combined make a compound.
</span>In a compound th<span>e atoms lose their individual properties and have different properties from the elements they are composed of.
</span><span> The smallest particle of an element that has the properties of that element is the atom.</span>