Many plants are poisonous because their stems and leaves contain oxalic acid, or sodium oxalate, when ingested, these substances cause swelling of the respiratory tract and suffocation. A standard analysis for determining the amount of oxalate ion, in a sample is to precipitate this species as calcium oxalate, which is insoluble in water. Choose the right net ionic equation for the reaction between sodium oxalate and calcium chloride, in an aqueous solution.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

i think the answer is terrae but not 100 percent sure. ▓▬▬ §