Questions

‘has’ is incorrectly used since the sentence is in past tense. Moreover, the subject is cities, which is plural.

Atoms of the same element can have same atomic number and number of electrons since, the atomic number is the number of protons and the number of protons and eectrons are the same in an element.

Hence, the atoms of the same element may differ in their atomic mass since it depends on the number of neutrons it holds and such atoms are called isotopes.

A constellation is a group of stars that forms an imaginary outline or pattern on the celestial sphere, typically representing an animal, mythological person or creature, a god, or an inanimate object. Stars may or may not be equidistant from the earth.

A permanent magnet can affect both magnets and electromagnets.

A permanent magnet has natural magnetic properties while a temporal magnet is created by artificial means. Permanent magnets do not lose their magnetic ability.

The term for classifying and grouping organisms is Taxonomy. It is the science of defining and naming groups of biological organisms on the basis of shared characteristics.

The first thing to be affected by alcohol is Judgement followed by brain center and senses like smell, taste, vision, etc...