Fossil fuel combustion and artificial agricultural fertilizer combine as the pri

Question

Fossil fuel combustion and artificial agricultural fertilizer combine as the primary human route for release of the following into the environment?

Nitrogen

Phosphorus

Potassium

Hydrogen

Question 12

The majority of water on earth is located where?

Lakes

Groundwater

Glaciers and Ice Caps

Oceans

Question 13

Which of the following describes a way in which atmospheric carbon is converted into organic (within living organisms) carbon?

Respiration

Leaching

Evapotranspiration

Photosynthesis

Question 14

Most plants and phytophankton are unable to convert which element from the atmosphere into a usable form?

phosphorus

water

nitrogen

carbon

Question 15

What can happen to bodies of water when excess fertilizers are introduced?

the dissolved oxygen levels can drop to zero

water plants and algae will die

excess nitrogen will evaporate and pollute the air

they will dry up

Nitrogen

Phosphorus

Potassium

Hydrogen

Explanation / Answer

11 nitrogen

12 oceans. 97% of the earths water is present in the oceans and then in glaciers in the form of ice

13 photosynthesis

14 nitrogen. some kind of nitrogen fixing bacteria will transform the molecular nitrogen into usable forms of nitrogen such as ammonia, nitrate and nitrite

15 the dissolved oxygen levels can drop to zero.

excess of nitrogen in ocean waters will increase the production of organisms. this results in the consumption of higher amounts oxygen by the organisms leading to depletion of oxygen

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