The function of a biological macromolecule depends on what other elements it contains. which of these biological macromolecule is rich in carbon-hydrogen bonds and functions as a long-term energy storage?

Lipids are the biological molecules which are used as long-term energy storage. Lipids can be described as biological molecules that are not soluble in water but are soluble in non-polar solvents.

Triglycerides are a type of lipids which are present in the adipose tissue. These molecules serve as major long- term energy storage molecules both in plants as well as in animals.

Carbohydrates serve as quickest energy molecules whereas lipids serve as molecules which can store energy for longer periods.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).