11. A factory uses recycled paper to produce pulp that is then used to make paper. If 75% of the recycled paper is converted into pulp, how much recycled paper is required to produce 1 tonne of pulp? (A)0.25 tonnes (B)0.75 tonnes (C)1.33 tonnes (D)1.50 tonnes

5. The enhanced greenhouse effect is due to (A)increased trapping of infrared radiation emitted from the Earth's surface and oceans. (B)decreased trapping of infrared radiation emitted from the Earth's surface and oceans. (C)increased trapping of visible and ultraviolet radiation emitted from the Earth's surface and oceans. (D)decreased trapping of visible and ultraviolet radiation emitted from the Earth's surface and oceans.

11. A factory uses recycled paper to produce pulp that is then used to make paper. If 75% of the recycled paper is converted into pulp, how much recycled paper is required to produce 1 tonne of pulp?
(A)0.25 tonnes
(B)0.75 tonnes
(C)1.33 tonnes
(D)1.50 tonnes

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