having been completed or ended. To use or consume all of something.

group of people with common characteristic. Groups of people who share common ideas or areas.

act in such way as to have effect on each other.

any of distinct types of material of which animals or plants are made. Thin soft papers for blowing the nose, etc..

Being what was wanted or needed. used to greet someone in polite or friendly way. Friendly greeting to someone who has arrived. To accept or receive something happily and gladly.

new or inexperienced. First part of an action or task. To do the first part of an action; to start.

branch of biology that deals with relations of organisms to one.

regions of surface, atmosphere, and hydrosphere of earth occupied by living organisms.

tendency to stutter while speaking. talk with continued involuntary repetition of sounds.

not same as another or each other.

digital audio file made available on internet for downloading. make multimedia digital file available as podcast.

study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy.

individual animal, plant, or single-celled life form.

necessary thing. Extremely important and necessary items.