Which of the following is not part of the nitrogen cycle? a conversion of atmospheric nitrogen into usable organic compounds by bacteria b breathing in nitrogen gas from the atmosphere c nitrogen fixation d conversion of nitrogen from decaying organisms into ammonia

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

The negative impacts of nonnative species generally outweigh the positive impacts