The digestive system.
Hope this helps!
Answer:
substantive genes
Explanation:
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Water is highly vital to living organisms. Flora and Fauna depend highly upon it, and if the water is damaged, say through oil spills, the water will lead for harm within the environment and the flowers and native animals.
big bang theory- the theory that states that the universe formed by rapid expansion of matter and energy from an initial infinitely small, dense point
biological species- a group of interbreeding organisms that can produce fertile offspring
eukaryotic cell - a type of cell that has a membrane-bound nucleus and membrane-bound organelles
evolution- the process by which inherited characteristics within a population change over generations
fossil- remains or traces of organisms preserved over long periods of time
geologic time scale- an organizational chart that chronologically divides the natural history of earth into eras and
periods
homologous structures- structures that occur in different species but are similar enough to suggest that the species had a common ancestor
natural selection- the process by which species pass on the beneficial traits that help them survive
prokaryotic cell- a type of cell without a membrane-bound nucleus and without membrane-bound organelles, considered by scientists to be a more primitive type of cell than the more complex eukaryotic cells
selective breeding- the process of breeding organisms with the most desirable traits
speciation- when natural selection leads to an entirely new species
theory- an explanation or model of related natural events that can be tested by observations or experiments
vestigial structures- structures that appear to have no function for the organism but probably had a function in an ancestral organism
