Natural selection. The trait that is unfavorable to the baby giraffe's survival will cause the death of giraffes with that specific gene that is responsible for a short neck vs a long neck. Natural selection causes traits that help the survival of the species will be carried throughout generations while unfavorable traits will be lost.
Different enzymes have specific active sites which can only catalyze one <span>substrate. Enzyme-substrate complexes are produced only when the substrate fits into the active site :)</span>
Answer:
it can get caught in equipment, catch fire or fall into chemicals
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Planting only red pine trees to replace native hardwood forests cut for lumber.
These unsegmented worms have a full digestive system even when parasitic.
