EVERYDAY SCIENCE

Detailed explanation-1: -A particular golf course is using large amounts of nitrogen fertilizer. What process could move this nitrogen into a local stream? Nitrogen fixation processes nitrogen from which of the following sources?

Detailed explanation-2: -Most nitrogen enters ecosystems via certain kinds of bacteria in soil and plant roots that convert nitrogen gas into ammonia (NH3). This process is called nitrogen fixation. A very small amount of nitrogen is fixed via lightning interacting with the air.

Detailed explanation-3: -Five main processes cycle nitrogen through the biosphere, atmosphere, and geosphere: nitrogen fixation, nitrogen uptake through organismal growth, nitrogen mineralization through decay, nitrification, and denitrification.

Detailed explanation-4: -Assimilation-This is how plants get nitrogen. They absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll. Ammonification-This is part of the decaying process.

Detailed explanation-5: -Decomposition. Plants take up nitrogen compounds through their roots. Animals obtain these compounds when they eat the plants. When plants and animals die or when animals excrete wastes, the nitrogen compounds in the organic matter re-enter the soil where they are broken down by microorganisms, known as decomposers.