2. Dinding di dalam trakea dilapisi oleh sel-sel rambut gelar yang berfungsi untuk
A. memudahkan jalannya udara
D. pertukaran udara
B. menolak debu atau benda asing
E. menghangatkan udara
C. difusi oksigen

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

well

explanation:

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )