As a rule, the teeth in a given mammal's mouth look very similar because they all have the same function.
a. true
b. false

False

Explanation:

The teeth of mammals do not have the similar function to perform. They have different types, number and sizes of teeth that are equipped to perform different functions.

Example: Human beings have incisors,canines, molar and premolar. The incisors are used to cut the food and hold the food.

The canines are use to tear hard food such as meat. The molars and premolars are used to grind the food.

Hence, the given statement is false.

bc blah

explanation:

bc blah

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.