You are enjoying a spring day but expect a storm to arrive soon. as the storm arrives and the rain begins to fall, you notice that the temperature drops dramatically. most likely, you have just experienced the arrival of a
a. stratospheric eventb. intertropical convergencec. cold frontd. hadley cell

You are enjoying a spring day but expect a storm to arrive soon. As the storm arrives and the rain begins to fall, you notice that the temperature drops dramatically. Most likely, you have just experienced the arrival of a cold front.

That's why rain occurs. A cold front crushes with a warm front. With the necessary pressure and temperature condition, the rain started.

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.