13. Coal deposits are located in Pennsylvania. Therefore, at one time, the clima

Question

13. Coal deposits are located in Pennsylvania. Therefore, at one time, the climate was: a) hot and humid b) hot and arid c) cold and humid d) cold and arid Underline the correct answer. 14. Deposits of rock salt reflect a climate that, at one time, was: a) hot and humid b) hot and arid c) cold and humid d) cold and arid Underline the correct answer. 15. Extensive layers of fossiliferous limestones ordinarily suggest marine environments that were: a) warm and shallow b) wam and deep c) cold and shallow d) cold and deep Underline the correct answer.

Explanation / Answer

answer 1 : Hot and humid

Explanation: Coal deposit formed in a region where the vegetation is high and best condition for high vegetation is high rain which is a function of high temperature eg tropical environment. Once the organic matter dies anaerobic humic conditions require for Rotting for peatfication.

answer 2 Hot and arid climate

Explanation: for the formation of salt evaporation is needed during evaporation the salt become concentrated in seawater and when supersaturated get a deposit. If conditions are not arid the atmosphere water may again dilute the water which decreases the rate of salt formation.

answer 3: warm and shallow

explanation: High temp decrease the calcium carbonate solubility in water and it precipitate. Therefore most of the carbonate deposit found in tropics. With depth CO2 level increase which makes water acidic and dissolves and not let to Calcium Carbonate to dissolve. SO shallow depth where CO2 is less best for calcium carbonate deposits.

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