B) Another protein, p27, has the function of preventing the cell from entering the S-phase. In many cases of breast cancer, there are reduced levels of p27 found in
the tumor cells. Explain why this reduced level of p27 could cause tumor cell
growth. (2 points)

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.

the real answer is b. scintillation counter

b exhibiting favoritism toward the kikuyu people.

its temperature is increasing. this causes molecular vibrations to increase.