<span>Mucous membranes provide a mechanical barrier at body openings. They also line the respiratory, GI, urinary, and reproductive tracts. Mucous membranes secrete mucus, a slimy substance that traps pathogens. The membranes also have hair-like cilia.</span>
E is the answer to your question
It's the first one, prokaryotic cells don't have membrane bound organelles, including the nucleus
Answer:
both planets have signs of volcanoes.
Explanation:
Probably J because it's higher in the lettering so it's also probably higher in high note ness, because I play the piano, I know this, the more frequency the more the pitch and the higher the pitch which is higher in the keyboard is higher in pitch.
