Birds, unlike mammals, do not have separate exits for urine and feces. Both waste products are eliminated simultaneously through the cloaca. While mammals excrete nitrogenous wastes mostly in the form of urea, birds convert it to uric acid or guanine, which reduces water loss in comparison.
 
        
                    
             
        
        
        
Be using a flow rate that moves 30% to 70% more volume through the cage or chamber each minute precautions need to be taken.
Inhale- To breathe in is to inhale. In contrast to "exhale," which is to breathe out, it is the reverse. Through our lips and nostrils, we take air into our lungs when we inhale, and breathe out again.
Lungs- The two spongy, pinkish-gray organs in our chest are our lungs. Air enters our lungs during inhalation, and oxygen from that air travels to our blood during breathing. Additionally, a waste gas called carbon dioxide travels from the blood to the lungs where it is expelled. 
To know more about the Inhalation, click on the below link, 
brainly.com/question/6991606
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Answer:
C
Explanation:
in a semi-permeable membrane, very specific amounts of materials are allowed through. This is particularly helpful in the human body because the body can then create "charge differences" between ions. In these charge differences, neurons can fire and pretty much all movement in your body is achieved because of these membranes. They are also called selective membranes