What takes pictures and tracks the movements of clouds and air masses.

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

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

Which greenhouse gas is emitted when burn fossil fuels for energy? a.nitrogen b.oxygen c.carbon dioxide d.helium