What is a soil horizon?
question 13 options:
soil that is still mostly rock material
bare soil from which all vegetation has been removed
a layer of soil with characteristic properties
a pictorial view of soil showing its ecosystem
how did the everglades wetlands become drier?
question 14 options:
dam and canal building diverted the historical flow of water away from the everglades.
dam and canal building forced water into underground aquifers to expose wetlands.
more water was used to irrigate out-of-state farms than could be replenished by rainfall.
climate change caused water in the everglades to evaporate.