Answer:
heart I think also I'm so sorry if I get you this wrong I think membrane not sure tell me what was the right answer but I think membrane.
When you see a long dash joining two elements in the structural formula of a chemical molecule you can assume that the chemical bonds in the compound are simple bonds.
In the representation of chemical molecules long dashes are used to represent simple bonds since these bonds are longer than double and triple bonds, which are represented by = and ≡ respectively.
<span>The sun likely to illuminate Earth equally from pole to pole during March and September.
During these two months, both poles receive the same amount of light. This time is called Equinox.
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