How do led lights differ from fluorescent lights?

leds emit light by concentrating wavelengths of light; fluorescent bulbs emit light because of heat.
leds emit light because of energized solids; fluorescent bulbs emit light because uv light interacts with a phosphor coating.
leds emit light because of heat; fluorescent bulbs emit light because of energized solids.
leds emit light because uv light interacts with a phosphor coating; fluorescent bulbs emit light by concentrating wavelengths of light.

answer; polycythemia is the correct answer;

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.