Hi!
Could you please be more specific, so that I can answer your question properly? Layer of what?
————C————
Step by step explaintion:
trust me i’m right lol
No if we really wanna know what animals can do is we learn and see how organism adapt to their natural environment
Answer:
B. not shown any evolutionary changes over the years
Answer: something that i notice about the path oxygen is that anytime i eat something oxegen comes in and then after that the remaining oxegen comes out and then the lefover oxegen stay inside the respiratory system
Explanation: