How are living mammals classified into groups?
a. type of circulatory system
b. method of development
c. method of respiration
d. method of regulating body temperature

Mammals are type that feeds milk to its young and that usually has hair or fur covering most of its skin. Living mammals classified into groups through method of development. Mammals are warm-blooded higher vertebrates. E.g. Marsupials, monotremes and humans.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up