of, concerning, caused by, amoebas

basic, natural

forming, of, the main, most important or useful part

elementary, fundamental

the lowest position or part

lowest; fundamental

most important

important, key

consisting of cells

basic, natural

of, at or in the beginning stage(s)

simple, basic

of great importance; basic

basic, important

essential

necessary

lowest

bottom

smallest in amount or degree

littlest, slightest

of an organ or organs of the body; of, concerning, living plants and animals; produced without artificial fertilizers

basic, natural

a special kind of paint for priming

textbook

thorough and complete; favouring complete reform; of the extreme left in opinions and policies

fundamental, basic

including the first stage only; undeveloped

basic, fundamental

basic; hidden but able to be found

fundamental, latent