QUESTION 1 Nitrogen is a pollutant threatening many many national parks by alter

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QUESTION 1 Nitrogen is a pollutant threatening many many national parks by altering plant growth patterns that can disrupt whole ecosytems Of the following, which was not mentioned in the reading as a source for the nitrogen? Industrial agricuture Use of lertiizers and livestock production Aircraft emissions, especialy high-tying jets None of the above-they were all mentioned as possible sources of ntrogen QUESTION A rock that has been heated and/or pressurized but not melted is called QUESTION 1 ne of our national parks contain rocks that were melted and ithified deep within the earth and then uplifted to be exposed rock within the earth is called t the surface 4. Yosemte National Park) ten Lava Magma Sediment Marde QUESTION 1 Why are natural lakes and ponds rare in th" Southern Colorodo Plateau in the vicinity of Grand Canyon? 0 vwterquadey recharged into the fractured Kabab Formabon, which apstycaiyon ard surrondng area The anid environment cannot provide enough raintall to sustain any surface waens Most of the natural water bodies on the plateau have been consumed by human populations The Glen Canyon Dam created a new hydrologic regime in the region that "sucked all of the water trom adjacent aquiters and increased infitration to the degree that no surface waher exist QUESTION 1 What is the significance of the leaf fossill Glomteri It is evidence for the dinosaurkiling asteroid impact it is evidence for continental drit itis one of the prime examples of biological evoluto ORistound at the top of Swens Aips and pro es mnt mere has been incredbie upin of rocks that were " edthe ow oceans

Explanation / Answer

15) e is the right option , they are all mentioned as possible sources of nitrogen . as combustion from fossil fuels releases nitrogen oxide which with atmosphere exposure turns into harmless nitrogen and in the agriculture as well the use of fertilizers releases nitrogen. aircraft also releases nitrogen compounds.

16) b- metamorphic rocks , these are the rocks which are great heat and pressure ,but do not melt, but with the course of time these rocks changes into another rock and are names are metamorphic rocks.

17) b- within he earth's surface the melted rocks are called magma, but when these molten rocks finds route( such as volcanoes vent) to the earth suface , then they are called as lava.

18) the  arid environment of grand canyon cannot provide enough rainfall to sustain surface water.

19) b- evidence for continental drift,

Glossopteris , a leaf fossil had a significance in the past as it was used in the formulation of continental drift hpothesis theory.

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