Check all the characteristics below that describe elements. one type of atom a pure substance more than one type of atom chemically combined elements

The characteristics that describe elements are:

A chemical element is called a substance that is made up of atoms of the same type whose nuclei show the same number of protons.

Therefore, we can conclude that elements are atoms that have the same number of protons in their nucleus.

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Explanation:

An element can be described as a substance having the same number of protons in its nucleus. It cannot be broken down further in a chemical reaction. It is made up of one type of atom and is a pure substance. For example, the atomic number of oxygen is 8. Hence,  the element, oxygen, has   8 protons.

In total, there have been 118 elements that have been discovered and places in the periodic table.

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the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.