A virus.
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The mechanism that affected the gene pool of the immigrants that entered the United States through Ellis Island from 1892 to 1954 is B. gene flow. Gene flow is the transfer of genes or alleles from one population to another. The migration of millions of individuals from countries across the Atlantic Ocean to the United States is responsible for the changes in the gene pool of the immigrants.
Answer:
The reason hydrogen bonding occurs is because the electron is not shared evenly between a hydrogen atom and a negatively charged atom.
Explanation:
Hydrogen in a bond still only has one electron, while it takes two electrons for a stable electron pair. Any compound with polar covalent bonds has the potential to form hydrogen bonds.
Sedimentary is b
igneous is a
metamorphic is e
Answer:...
Here are several examples of anions:
Bromide - Br -
Chloride - Cl -
Fluoride - F -
Iodide - I -
Nitride - N 3-
Oxide - O 2-
Sulfide - S 2
Explanation:
