Five ounces of beef strip steak would count as ounce equivalent of the protein foods.

The 5 ounces of beef strip steak would count as 5-ounce equivalents in the Protein Foods Group.  

Al the foods made from poultry, meat, seafood, peas and beans, eggs, processed soy products, seeds, and nuts are regarded as the component of the Protein Foods Group.  

Steak, like any other animal product, is a rich source of protein. A 5 oz serving of steak gives 38 grams of protein, more than 6 times of the amount in one egg. The proteins help in repairing muscles and other tissues and also helps in building muscles.  

b. the carbon cycle ensures living things have a source of hydrogen

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.