Context: Forest gardening was also being used as a food production system in various parts of the world over this period. Forest gardens originated in prehistoric times along jungle-clad river banks and in the wet foothills of monsoon regions.[citation needed] In the gradual process of families improving their immediate environment, useful tree and vine species were identified, protected and improved, whilst undesirable species were eliminated. Eventually superior foreign species were selected and incorporated into the gardens.

Question: In what kind of area did forest gardening start?
Answer: jungle-clad river banks

Question: In what other types of areas did forest gardening show up?
Answer: foothills of monsoon regions

Question: What kind of plant did these early gardeners seek out?
Answer: tree and vine species

Question: What use did forest gardeners put to tree and vines to?
Answer: identified, protected and improved

Question: What did these gardeners do about unwanted species?
Answer: eliminated

Question: What type of gardens originated in modern times?
Answer: Unanswerable

Question: What type of gardens were located in the dry foothills of monsoon regions?
Answer: Unanswerable

Question: Inferior foreign species were selected and incorporated where?
Answer: Unanswerable

Question: What was being used as a food production system in all parts of the world?
Answer: Unanswerable

Question: When families were trying to ruin their immediate environment, undesirable species were what?
Answer: Unanswerable