Answer:
1 A, 3 B, and 7 A are examples of <em>group number</em> on the periodic table.
Explanation:
The table that consists of elements arranged systematically on the basis of atomic numbers is called periodic table. Groups and periods are two important part of a periodic table. A periodic table contains seven horizontal rows, called as periods and 18 vertical columns, called group.
The groups name is given in the form of number and alphabets. It represents the columns present in the periodic table.
Hence, 1 A, 3 B, and 7 A are examples of <u><em>group number</em></u> on the periodic table.
Answer:a force of attraction exerted by each particle of matter in the universe on every other particle
Explanation:gravitation describes the attractive force between any two masses
The answer is <span>A) Velocity describes speed with direction.
Speed can be in any direction </span>
They differ because they are transverse wave. That is their direction of travel is perpendicular to its vibrations.
Microorganisms and all other living organisms are told to be procarotics
