8. Two guinea pigs mate. At least one offspring has a white coat. Which of the following
crosses could NOT have produced such an
offspring?
A. Bb, Bb
B. Bb, BB
C. Bb, bb
D. bb, bb

explanation:

yes you are doing it right great gob

b.have there own function.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.