An element is identified as either a

Elements can be defined by their unique properties and atomic.

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Elements can be defined by their unique properties and atomic number

Explanation:

Each element has a diffrent atomic number for example hydrogen has an atomic number of 1

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~chara

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation: