Avertical column within the periodic table represents a family or

Explanation:

Elements present in vertical columns of a periodic table represent a group or a family.

For example, elements of group 2 are beryllium, magnesium, calcium, strontium, barium, and radium.

Elements of a group have same number of valence electrons due to which they show same chemical properties.

Whereas elements present in a horizontal line depicts period in a periodic table.

For example, lithium, beryllium, boron and carbon they all belong to period 2 of the periodic table.

Hence, we can conclude that a vertical column within the periodic table represents a family or group.

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

the answer would be a