Hello Guys!! I'm boredwanna talk?

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

What controls activities within a eukaryotic cell?