The cartilaginous structures<span> that ring most mammalian tracheae are ... The </span>trachea<span> is</span>lined<span> with a moist mucous-membrane layer composed of </span>cells<span> containing small hairlike projections called </span>cilia<span>. ... </span>Such<span> outgrowths could </span>have<span> been useful to insects exposed by the drying up of a temporary aquatic.
IMPORTANT! * MARK AS BRAINLIEST </span><span>ANSWER !!!! *</span>
        
             
        
        
        
Answer:
Features of the ocean floor include the continental shelf and slope, abyssal plain, trenches, seamounts, and the mid-ocean ridge.
Explanation:
I'm gonna be honest.... I looked it up lol
Hope this helps!
 
        
             
        
        
        
It's a summarization of useless cash spendings, sorted by date.
        
             
        
        
        
Answer:
all
Explanation:
represents an observation is fact
offers an explanation is theory
defines a relationship is laws
hope it helps