Answer:
Area Studies or Regional Tradition of Geography.
Explanation:
Sedimentary, like sand.
Weathering and erosion make large rocks smaller.
I think the answer is fertility rate... but i could be wrong. good luck!
Answer:
i dont know but u must be smart
Explanation:
u is a smart kid keep it going
Some of the factors would be introduction of non native species, pollution, overgrazing, chemical agents and habitat loss