Answer:
oxygen from reaching your tissues and organs.
Explanation:
Carbon Monoxide is very dangerous to us and many other animals. It is a flamable gas that is bad for our blood cells. When we breath it in and it gets put into out blood, it cannot be used as a substitution for air, and you will suffocate.
...I think.
I’m confused of the question your asking,can you give me more details?
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Yes, all ecosystems need to have a top predator (quaternary consumers) so that the cycle of the food chain can stay complete.