Answer:the tough outermost membrane enveloping the brain and spinal cord
Explanation:
I’m confused of the question your asking,can you give me more details?
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.
Answer:
The binomial nomenclature system combines two names into one to give all species unique scientific names.
Explanation:
Hope this helps, not 100% sure if this is what you are looking for :)