How does elements atomic mass differ from its mass number?

•Atomic mass is also known as atomic weight. Atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes.

•The mass number is a count of the total number of protons and neutrons in an atom's nucleus.

Explanation:

Atomic Mass Versus Mass Number

1.The mass number is the sum of the number of protons and neutrons in an atom. It is a whole number.

2.The atomic mass is the average number of protons and neutrons for all natural isotopes of an element. It is a decimal number.

3.Atomic mass value sometimes change over time in publications as scientists revise the natural isotope abundance of elements.

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.

your answer would be “dry”