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Heredity occurs in all living organisms. When a cell makes an exact copy of itself, known as mitosis, two duplicate cells are created. All traits are passed on by this simple duplication. ... This combination allows a large variation between individuals and provides opportunity for more successful traits to be passed on.
the remains or impression of a prehistoric plant or animal embedded in rock and preserved in petrified form.
Vestigial organs are organs of the body which are smaller and simpler than those in related species. ... But one type of snake – the boas – have vestigial rear legs and pelvis. The human vermiform appendix is another example. That was much larger, and stored microbes which produced cellulase to break down plant cell walls.
the process of providing or obtaining the food necessary for health and growth
the breakdown of glucose by enzymes, releasing energy and pyruvic acid.
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. ... Respiration is one of the key ways a cell releases chemical energy to fuel cellular activity.