During his first set of experiments, Mendel crossed true-breeding plants that expressed different versions of a studied trait. For example, he crossed tall plants with short plants. Based on his results, he said the tall plants exhibited the dominant form of the trait, plant height. Which of the following best describes the F, offspring of this cross? O A. All were tall O B. About 25% were short. O C. All were short. D. About 25% were tall.

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.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.