2. Why can animal waste be toxic? O A. The ammonia in manure smells like rotten gas.
O B. The methane in manure is converted to particulate matter
OC. The hydrogen sulfide in manure can cause respiratory failure
O D. Carbon dioxide accumulates on top of liquid manure and is highly flammable

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.