e·co·sphere 
(ēkō-sfîr′, ĕkō-)
(ēkō-sfîr′, ĕkō-)n.
The regions of the universe, especially on the earth, that are capable of supporting life; the biosphere.
- disqualify
- disquiet
- disquietingly
- disquietly
- disquietude
- disquisition
- Disraeli
- disrate
- disregard
- disregardful
- disrelish
- disremember
- disrepair
- disreputability
- disreputable
- disreputableness
- disreputably
- disrepute
- disrespect
- disrespectability
- disrespectable
- disrespectful
- disrespectfully
- disrespectfulness
- disrobe