Answer:
A
Explanation:
China produces 30 percent of the world's rice production
B. Humans were able to settle down and live in one place. No longer having to hunt seasonal and migrating prey, humans could focus on building communities but still relied on trade for supplies that were difficult to find or non native to their areas.
<span>(A)SPIT
Spit also known as sand spit is a stretch of beach or sand built up that projects into the water. Spits are caused by wind blowing at an angle to the coastline, resulting in long-shore drift. The material moved during long-shore drift becomes deposited therefore causing a spit.</span>
I would say that the resource you could use to find the meaning of <em>ambiguous </em>is the dictionary.
An almanac is an annual publication about weather, crops, etc.
A thesaurus is a dictionary of synonyms.
An encyclopedia is self-explanatory.