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Title: Coal was formed about 300 million years ago during a period of time called the ____ period. Post by: petravarkonyi on Mar 9, 2018 Coal was formed about 300 million years ago during a period of time called the ____ period.
A) Monolithic B) Crustation C) Carboniferous D) none of these Question 2 The outside of the hedgehog's spine is solid; the inside is filled with soft ____________________ pockets. Fill in the blank(s) with correct word Question 3 With additional pressure and time, subbituminous coal transforms into ____ coal. A) anthracite B) subbituminous C) lignite D) bituminous Question 4 The hedgehog's spines are modified hairs made of ____________________. Fill in the blank(s) with correct word Question 5 As the rock and soil above the lignite increases, the high pressures cause the coal to become harder. This step in coal formation is ____ coal. A) lignite B) subbituminous C) anthracite D) bituminous Question 6 How often should fresh bedding be provided for a hedgehog? A) daily B) every 2-3 days C) at least once a week D) twice a month Title: Coal was formed about 300 million years ago during a period of time called the ____ period. Post by: Cooter747 on Mar 9, 2018 A air D keratin B C |