Babies born in singleton births in the U.S. have weights tha…

Babies born in singleton births in the U.S. have weights that are approximately normally distributed with a mean 3.5 kg and standard deviation of 0.3 kg. Regarding this population: What is the probability of randomly selecting a baby weighing between 3 and 4 kg?

Nitrifying bacteria participate in the nitrogen cycle mainly…

Nitrifying bacteria participate in the nitrogen cycle mainly by [a] A) converting nitrogen gas to ammoniaB) releasing ammonium from organic compounds, returning it to the soilC) converting ammonium to nitrate, which plants absorbD) incorporating nitrogen into amino acids and organic compounds