A Rainwater Cistern Is Always Made of Black Polyethylene

question 13

True/False

A rainwater cistern is always made of black polyethylene.

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Definitions:

Lipid

A group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins, and other similar compounds, known for being energy storage molecules and components of cell membranes.

Nucleic Acid

Biological macromolecules, such as DNA or RNA, that store genetic information and are involved in the synthesis of proteins.

Protein

Large, complex molecules essential for body structure, function, and regulation of tissues and organs.

Hydroxyl Group

A functional group consisting of an oxygen atom bonded to a hydrogen atom (-OH), common in alcohols and many other organic compounds.