Mendel's first experiment crossed true-breeding plants with different versions of the hereditary factor for a trait. which of the following best describes mendel's results? a. all of the f1 offspring expressed the same version of the trait. b. the f1 offspring expressed a combination of the traits of the parents. c. about 25% of the f1 offspring showed the recessive trait. d. about 25% of the f1 offspring showed the dominant trait.

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.