First one is false, 2nd Is true,3rd is faulse, 4th is true,,Hope that helps
Differences in the density of water can<span> also cause </span>currents<span> to form and move. Density is </span>affected<span> by temperature and </span>salinity. Cold water or water with dissolvedsalts<span> (higher </span>salinity<span>) is denser than warm water or water without dissolved </span><span>salts.</span>
Answer:
the answer to that is,(c) they are unspecialised
Answer:
The correct option is: c.prevent food from entering the lungs
Explanation:
Trachea is a cylindrical cartilaginous hollow pipe that branches into the two primary bronchi of the lungs.<u> It is the passage of air that connects the larynx to the lungs and thus it is also known as the windpipe</u>.
The trachea is lined with a mucous-membrane which moistens and protect the airway.<u> It also traps and prevents the dust and other contaminating particles from reaching the lungs.</u>
