chloroplast
Avalanche
The prefix that fits the definition of backward or back is "re-".
"Frivolous" fits the definition of incapable of serious thought.
The prefix that fits the definition of pseudoscience is "pseudo-", which means false or not genuine.
Actively choose to engage, not disengage
Yes, it fits the definition
Para
Yes, Panama fits the definition of an isthmus.
Para is the prefix best fitting the definition of beside.
Vegetation.
A compass fits this definition.
Enumerating.