Examlex
A foreign substance in the body is called a(n) ________.
Hemisphere
Half of a spherical or roughly spherical body, often used to refer to one half of the brain or the globe.
Epigenetic Marks
Chemical modifications to DNA and histones that affect gene expression without altering the DNA sequence, often in response to environmental influences.
Environment
The aggregate of surrounding things, conditions, or influences affecting the growth or development of living things.
Natural Selection
The process by which organisms better adapted to their environment tend to survive and produce more offspring.
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