Which statement correctly describes how nitrogen in the soil returns to the atmosphere?
A. Soil bacteria converts usable nitrogen into nitrogen gas.
B. Plants convert usable nitrogen into nitrogen gas.
C. Nitrogen-fixing bacteria in plant roots convert usable nitrogen into nitrogen gas.
D. Lightning strikes the soil converting the nitrogen in the soil into nitrogen gas.

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure

The earths core is made up mainly of what 2 substances? 2. like an egg, earth has a core, a layer surrounding the core, and a thin, hard outer layer. which layers of the earth match the layers of an egg?

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.