An organism's phenotype is determined by its genotype, but gene expression can be affected by environmental factors. These factors can alter the inherited traits of an organism.
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Answer:
What brought an end to efforts during the late thirteenth century to form an alliance of European states and the il-khanate of Persia aimed at crushing Islamic forces in the eastern Mediterranean
Explanation:
The phrase which best describes a period on the periodic table is: a row of elements
Periodic table can be defined as an organized tabular arrangement of all the chemical elements arranged in order of increasing atomic number or number of protons, especially in rows.
On a related note, chemical elements with the same number of valence electrons are found in the same column of the periodic table.
In conclusion, the rows of a periodic table are referred to as periods while the columns are referred to as groups.
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