HOOOMASS answer this, please. Explain how the Earth itself is a system and describe an example of an interaction within this system.

These subsystems are interconnected by processes and cycles, which, over time, intermittently store, transform and/or transfer matter and energy throughout the whole Earth system in ways that are governed by the laws of conservation of matter and energy.

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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).

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.