The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. ... Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.
Birds have feathers (bats and insects can fly too)
It is d because if it was hundreds of years it would still be bone in the dirt
Answer:
D. Mitochondria. Mitochondira is the powerhouse of the cell, where DNA is stored.
Explanation:
Molecular homology, because it compares dna