Comment on the statement 'All mammals are viviparous

All mammals have

All mammals have

Comment on the statement that all ores are minerals but all the minerals are not the ores.

Comment on the statement : All Bronsted bases are also Lewis bases but all Bronsted acids are not Lewis acids.

Comment on the statement : All Arrhenius acids are Bronsted acids but all Arrhenius bases may not be Bronsted bases.

Comment on the statement that all gases behave in ideal manner at low pressure and high temperature.

Say True of False: All the mammals are viviparous.