Which of these statements about the relative toxicity, water costs, and energy costs of the different nitrogenous waste removal methods (direct ammonia release or conversion into urea or uric acid) is NOT true?

A. Conversion into urea requires the most water
B. The toxicity level of urea is intermediate between that of ammonia and uric acid
C. Ammonia is the most toxic
D. Conversion into uric acid requires the most energy

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )

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.

is it multiple choice?