6 B h
Which statement correctly describes an event
of the nitrogen cycle?
A Plants take N, directly from the air.
B Plants release N, to the atmosphere, where
it is converted to nitrites.
C Some bacteria in the soil recycle nitrogen
back into the atmosphere.
D Trees release N, to the atmosphere.

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

during expiration the diaphragm relaxes, which causes the diaphragm to move downwards. the contraction of diaphragm increases the space for expansion of lungs. hence, the diaphragm relaxes and positioned downward during expiration.