biology- the study of life.
cells- highly organized, tiny structures with thin coverings called membranes.
reproduction- the process by which organisms make more of their own kind.
metabolism- the sum of all of the chemical reactions carried out in an organism.
homeostasis- changes in the external environment.
genes- sets of inherited instructions for making protiens.
heredity- passing of traits from parent to offspring.
mutation- a change in the DNA of a gene.
evolution- change in the inherited traits of species over time.
species- a group of genetically similar organisms that can produce fertile offspring.
natural selection- organisms with favorble genes are more likely to survive and reproduce.
ecology- the science that studies the interactions of living organisms with one another and with the non-living part of their environment.
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