A variation is a reference to the differences or deviations, such as the structure and form, as for crossing over is the exchange of genetic material between the non-sister chromatids of the homologous chromosomes during meiosis.
Answer:both occur at convergent
Explanation:
Answer:
<u><em>Surface tension </em></u>
Explanation:
A measure of how difficult it is to stretch or break the surface of a liquid Is called <u><em>surface tension.</em></u>
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Answer: Anesthesia
Explanation:
Anesthesia was used in 95% of Civil War surgeries. Sulfuric ether had been discovered in Europe in the 1830's and was first used as an anesthetic by William Morton in 1846. After a successful public demonstration it became widely used in surgery.