Answer:
Denitrification completes the nitrogen cycle by converting nitrate (NO3-) back to gaseous nitrogen (N2). Denitrifying bacteria are the agents of this process. These bacteria use nitrate instead of oxygen when obtaining energy, releasing nitrogen gas to the atmosphere
Niche is the biological role that species play in the environment. Each organism/species has a role in the ecosystem. How these organisms interact with their environment (biotic and abiotic) to gather food, mate and survive is the species' niche.
[THIS IS A JOKE, I AM NOT A TRAINED PROFESSIONAL] A: some idiot running across the street and getting run over by a semi truck. This would weed out the... AHEM lower IQ folk and people would be like: you remember when Jerry ran across the street and got smeared on the windscreen of that semi going 80 MPH down I-95? Yeah, let’s not just run across the street and be smart. Moral of the story is don’t be a Jerry.
Carbohydrates act as an energy storage molecule
Answer: True
Explanation: Several fresh water species live in water sheds.
Hope this helps! :)