Health and diseases are complex problems in which group of organisms ?

Species is a group of organisms which,

Under which group of micro-organisms Amoeba fall?

Although sexual reproduction is a long drawn, energy intensive complex form of reproduction, many groups of organisms in Kingdom Animalia and Plantae prefer this mode of reproduction. Give atleast three reasons for this.

What are the major groups of micro-organisms?

Name the major groups of micro organisms.

One word answer Evolutionary history of a group of organisms.

cross between unrelated group of organisms is called:

Define disease and health ?