Outline 3 Sheet Question

[Hasmik Dis 2F]

The outline sheet on Dr Lavelle's website for Outline 3 said that we should be able to draw lewis structures of inorganic, organic, and biological compounds. I was wondering: what's the difference between these three?
Also, It said we should be able to "Draw line structures of organic compounds." Can anyone clarify what this means?

[Joseph Hsing 2C]

Organic molecules have carbon-hydrogen bonds and these are made by biological systems, inorganic molecules don't have these bonds. Line structures is referring to the rings and lines formed by carbon chains.

[Aliya 1H]

For line structures of organic compounds, each point/end of the line represents a carbon in the carbon chain and then other elements will be written like in normal lewis structures, except for hydrogens attached to the carbons.

[lauren_tran_1L]

There are also different notations for double or triple bonds. See a molecule of benzene for more information. Hope this helps!